CHLOROBENZENE

This chemical is used extensively as a solvent for pesticide formulations and automobile parts degreasing; as a chemical intermediate in the production of diphenyl oxide, diisocyanates, and nitrochlorobenzene (Bingham et al, 2001). It is also used in the manufacture of phenol, aniline, and DDT; as a solvent for paints; in the manufacture of resins, dyes, perfumes, and pesticides, and as a heat transfer medium (Baselt, 2000; Budavari, 1996) Anon, 1994).

FORMS

Chlorobenzene is a colorless to yellowish, very refractive liquid with a faint, not unpleasant odor similar to almonds (Budavari, 1996; ATSDR, 1990).

SOURCES

Chlorobenzene has no natural sources. It is produced by the chlorination of benzene in the presence of a catalyst. It is also produced via the Gulf oxychlorination process (benzene plus hydrogen chloride, anhydrous) (HSDB , 2002). Due to its volatility, most environmental releases occur to air. It can be released to water and the ground during the disposal of waste solvent (Anon, 1988). Chlorobenzene can persist in soil (several months), in air (3.5 days), and water (less than 1 days) (ATSDR, 1990).

When released to air, chlorobenzene is expected to degrade slowly by free radical oxidation. When released to surface water, it is expected to partition rapidly to air where it degrades. Chlorobenzene is relatively resistant to biodegradation, with an estimated half-life in soil of several months. When released to soil, it is thought to bind to soil and to migrate slowly to ground water. Chlorobenzene is a rare environmental contaminant (Anon, 1988).

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

Chlorobenzene is a skin and mucous membrane irritant. Exposures may result in central nervous system depression and liver and kidney damage. Intentional ingestions have resulted in hepatic necrosis. Acute exposures may begin, depending on dose, with headaches and dizziness followed by gastrointestinal complaints, shortness of breath, tachycardia and circulatory insufficiency.

Chronic inhalation exposures may result in eye irritation, headache, dizziness, somnolence and gastrointestinal disorders. Acute inhalation exposures to high concentrations may result in narcosis. There is no evidence that severe liver damage results from acute inhalation exposures.

POTENTIAL HEALTH HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

May cause toxic effects if inhaled or absorbed through skin.
Inhalation or contact with material may irritate or burn skin and eyes.
Fire will produce irritating, corrosive and/or toxic gases.
Vapors may cause dizziness or suffocation.
Runoff from fire control or dilution water may cause pollution.

-FIRST AID

FIRST AID AND PREHOSPITAL TREATMENT

EMESIS/NOT RECOMMENDED -

Induction of emesis is not recommended because the patient may become rapidly obtunded.

ACTIVATED CHARCOAL -

No data were found to indicate that chlorobenzene is adsorbed to charcoal. However, until definitive quantitative data are available, use of activated charcoal is recommended.
Avoid activated charcoal if gastrointestinal burns are suspected and endoscopy is anticipated.
PREHOSPITAL ACTIVATED CHARCOAL ADMINISTRATION

Consider prehospital administration of activated charcoal as an aqueous slurry in patients with a potentially toxic ingestion who are awake and able to protect their airway. Activated charcoal is most effective when administered within one hour of ingestion. Administration in the prehospital setting has the potential to significantly decrease the time from toxin ingestion to activated charcoal administration, although it has not been shown to affect outcome (Alaspaa et al, 2005; Thakore & Murphy, 2002; Spiller & Rogers, 2002).

In patients who are at risk for the abrupt onset of seizures or mental status depression, activated charcoal should not be administered in the prehospital setting, due to the risk of aspiration in the event of spontaneous emesis.
The addition of flavoring agents (cola drinks, chocolate milk, cherry syrup) to activated charcoal improves the palatability for children and may facilitate successful administration (Guenther Skokan et al, 2001; Dagnone et al, 2002).

CHARCOAL DOSE

Use a minimum of 240 milliliters of water per 30 grams charcoal (FDA, 1985). Optimum dose not established; usual dose is 25 to 100 grams in adults and adolescents; 25 to 50 grams in children aged 1 to 12 years (or 0.5 to 1 gram/kilogram body weight) ; and 0.5 to 1 gram/kilogram in infants up to 1 year old (Chyka et al, 2005).

Routine use of a cathartic with activated charcoal is NOT recommended as there is no evidence that cathartics reduce drug absorption and cathartics are known to cause adverse effects such as nausea, vomiting, abdominal cramps, electrolyte imbalances and occasionally hypotension (None Listed, 2004).

ADVERSE EFFECTS/CONTRAINDICATIONS

Complications: emesis, aspiration (Chyka et al, 2005). Aspiration may be complicated by acute respiratory failure, ARDS, bronchiolitis obliterans or chronic lung disease (Golej et al, 2001; Graff et al, 2002; Pollack et al, 1981; Harris & Filandrinos, 1993; Elliot et al, 1989; Rau et al, 1988; Golej et al, 2001; Graff et al, 2002). Refer to the ACTIVATED CHARCOAL/TREATMENT management for further information.
Contraindications: unprotected airway (increases risk/severity of aspiration) , nonfunctioning gastrointestinal tract, uncontrolled vomiting, and ingestion of most hydrocarbons (Chyka et al, 2005).

-MEDICAL TREATMENT

LIFE SUPPORT

Support respiratory and cardiovascular function.

SUMMARY

FIRST AID - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Move victim to fresh air.
Call 911 or emergency medical service.
Give artificial respiration if victim is not breathing.
Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes.
In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes.
Wash skin with soap and water.
Keep victim warm and quiet.
In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin.
Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed.
Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.

FIRST AID

INHALATION EXPOSURE -

INHALATION: Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with an inhaled beta2-adrenergic agonist. Consider systemic corticosteroids in patients with significant bronchospasm.

DERMAL EXPOSURE -

DECONTAMINATION: Remove contaminated clothing and jewelry and place them in plastic bags. Wash exposed areas with soap and water for 10 to 15 minutes with gentle sponging to avoid skin breakdown. A physician may need to examine the area if irritation or pain persists (Burgess et al, 1999).

EYE EXPOSURE -

DECONTAMINATION: Remove contact lenses and irrigate exposed eyes with copious amounts of room temperature 0.9% saline or water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist after 15 minutes of irrigation, the patient should be seen in a healthcare facility.

ORAL EXPOSURE -

Do not induce emesis.
DILUTION: If no respiratory compromise is present, administer milk or water as soon as possible after ingestion. Dilution may only be helpful if performed in the first seconds to minutes after ingestion. The ideal amount is unknown; no more than 8 ounces (240 mL) in adults and 4 ounces (120 mL) in children is recommended to minimize the risk of vomiting.
GASTRIC LAVAGE: Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Protect airway by placement in the head down left lateral decubitus position or by endotracheal intubation. Control any seizures first.

CONTRAINDICATIONS: Loss of airway protective reflexes or decreased level of consciousness in unintubated patients; following ingestion of corrosives; hydrocarbons (high aspiration potential); patients at risk of hemorrhage or gastrointestinal perforation; and trivial or non-toxic ingestion.

ACTIVATED CHARCOAL: Administer charcoal as a slurry (240 mL water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents, 25 to 50 g in children (1 to 12 years), and 1 g/kg in infants less than 1 year old.

-RANGE OF TOXICITY

MINIMUM LETHAL EXPOSURE

GENERAL/SUMMARY

The minimum lethal human dose to this agent has not been delineated.

ANIMAL DATA

INHALATION - Cats exposed to 8000 ppm showed severe narcosis after one-half hour and died 2 hours after removal from exposure, but tolerated 660 ppm for 1 hour (Hathaway et al, 1996).
INHALATION - Acute inhalation exposure at 22,000 ppm killed two of three rats in 2.3 hours, while at 9000 ppm, two of three rats died within 3 hours (ACGIH, 1991).
INHALATION - Following exposure to concentrations of 20 milligrams/liter (4300 ppm) for 2 hours, 100% mortality was reported in mice (ATSDR, 1990). Death was a result of CNS depression resulting in respiratory failure.
ORAL - Following a single exposure to 4000 milligrams/kilogram in corn oil by gavage in rats, death occurred within 2 to 3 days. In mice, death occurred in 2 to 3 days after a single exposure to 1000 milligrams/kilogram by gavage (ATSDR, 1990).
ORAL - Some deaths occurred in dogs administered 272.5 mg/kg/day in capsule form for up to 92 days (Hathaway et al, 1996).

MAXIMUM TOLERATED EXPOSURE

GENERAL/SUMMARY

An odor threshold for chlorobenzene is reported as 0.5 ppm, while the current threshold limit value is 10 ppm (46 mg/m(3)) (Baselt, 2000).
In humans, eye and nasal irritation occur at 200 ppm, and at that level the odor is pronounced and unpleasant (Hathaway et al, 1996).

CASE REPORTS

ADULT

Acute liver failure with liver cell necrosis was reported in a 40-year-old male following an ingestion of 140 mL of a 90% chlorobenzene solution. Liver biopsy revealed centrilobular and mediolobular necrosis. Encephalopathy did not develop. The patient recovered following prostaglandin E1 (alprostadil) therapy and other supportive measures (Babany et al, 1991).
Following the ingestion of alcohol and approximately 150 mL of an agent containing 50% chlorobenzene and 50% mineral spirits in a suicide attempt, a 40-year-old male developed elevated hepatic enzyme levels, and mediolobular hepatic necrosis was seen on liver biopsy. He recovered following NAC and alprostadil therapy (Reygagne et al, 1992).
Headaches and both upper respiratory tract and eye irritation were reported in a 70-year-old woman exposed to chlorobenzene contained in a glue preparation used in hat making. The glue contained 70% chlorobenzene (Girard et al, 1969).

PEDIATRIC

A two-year-old boy who swallowed 5 to 10 mL of Puran, a cleaning agent containing chlorobenzene, showed no ill effect for 2.5 hours, but after eating lunch he quickly lost consciousness and suffered vascular collapse as well as heart failure. He recovered and survived (Clayton & Clayton, 1981).

OCCUPATIONAL

A 1947 study of people who were occupationally exposed to chlorobenzene reported that many of the individuals who had worked in the factory for 1 to 2 years suffered from headache, dizziness, somnolence, and dyspeptic disorders. Twenty-eight of the 52 people studied were employed in a factory where the only vapors they were exposed to were those of chlorobenzene (Clayton & Clayton, 1981).

ANIMAL DATA

Several species of animals exposed daily to 1000 ppm for 44 days showed injury to the lungs, liver, and kidneys, but at 475 ppm there was only slight liver damage in guinea pigs (Hathaway et al, 1996).
Cats tolerated 660 ppm for 1 hour, but at 8000 ppm showed severe narcosis after one-half hour and died 2 hours after removal from the exposure (Hathaway et al, 1996).
In 91-day gavage studies, no toxic effects were observed at doses of 125 mg/kg/day or less for both sexes of rats and mice (Hathaway et al, 1996).
No consistent effects were observed in dogs administered 54.5 mg/kg/day in capsule form for up to 92 days (Hathaway et al, 1996).
Gastric intubation of 120 mg/kg/day for 2 years produced a slight but statistically significant increase in tumor frequencies in male rats (Hathaway et al, 1996).
Concentrations up to 450 ppm, 7 days/week, 6 hours/day, did not adversely affect reproductive performance or fertility in a two-generation rat study. In rats and rabbits, inhalation of 590 ppm, 6 hours/day, during periods of major organogenesis did not produce structural malformations (Hathaway et al, 1996).
Dermal doses of 10 mL/kg were not lethal to guinea pigs (ACGIH, 1991).
Daily doses of 500 mg/kg body weight of chlorobenzene were tolerated for 14 days by both mice and rats, while rats died following repeated 1000 mg/kg doses (ACGIH, 1991).

Carcinogenicity Ratings for CAS108-90-7 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): A3 ; Listed as: Chlorobenzene

A3 :Confirmed Animal Carcinogen with Unknown Relevance to Humans: The agent is carcinogenic in experimental animals at a relatively high dose, by route(s) of administration, at site(s), of histologic type(s), or by mechanism(s) that may not be relevant to worker exposure. Available epidemiologic studies do not confirm an increased risk of cancer in exposed humans. Available evidence does not suggest that the agent is likely to cause cancer in humans except under uncommon or unlikely routes or levels of exposure.

EPA (U.S. Environmental Protection Agency, 2011): D ; Listed as: Chlorobenzene

D : Not classifiable as to human carcinogenicity.

IARC (International Agency for Research on Cancer (IARC), 2016; International Agency for Research on Cancer, 2015; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010a; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2008; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2007; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2006; IARC, 2004): Not Listed
NIOSH (National Institute for Occupational Safety and Health, 2007): Not Listed ; Listed as: Chlorobenzene
MAK (DFG, 2002): Not Listed
NTP (U.S. Department of Health and Human Services, Public Health Service, National Toxicology Project ): Not Listed

TOXICITY AND RISK ASSESSMENT VALUES

EPA IRIS

EPA Risk Assessment Values for CAS108-90-7 (U.S. Environmental Protection Agency, 2011):

Oral:

Slope Factor:
RfD: 2x10(-2) mg/kg-day

Inhalation:

Unit Risk:
RfC:

Drinking Water:

Unit Risk:

TOXICITY VALUES

References: Lewis, 1992 RTECS, 2002
- LCLo- (INHALATION)MOUSE:
- LCLo- (INHALATION)RAT:
- LD- (SKIN)GUINEA_PIG:
- LD50- (ORAL)GUINEA_PIG:
- LD50- (INTRAPERITONEAL)MOUSE:
- LD50- (ORAL)MOUSE:
- LD50- (ORAL)RABBIT:
- LD50- (ORAL)RAT:
- LD50- (SUBCUTANEOUS)RAT:
- LDLo- (INTRAPERITONEAL)GUINEA_PIG:
- LDLo- (INTRAPERITONEAL)RAT:
- LDLo- (SUBCUTANEOUS)RAT:
- TCLo- (INHALATION)RABBIT:
- TCLo- (INHALATION)RAT:

CALCULATIONS

AMBIENT CONVERSIONS

CONVERSION FACTORS

Conversion factor at 68 degrees F and 760 mmHg: 1 ppm = 4.61 mg/m(3) (NIOSH , 2002).

Conversion factor at 68 degrees F and 760 mmHg: 1 mg/m(3) = 0.22 ppm (ATSDR, 1990).

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS108-90-7 (American Conference of Governmental Industrial Hygienists, 2010):

Editor's Note: The listed values are recommendations or guidelines developed by ACGIH(R) to assist in the control of health hazards. They should only be used, interpreted and applied by individuals trained in industrial hygiene. Before applying these values, it is imperative to read the introduction to each section in the current TLVs(R) and BEI(R) Book and become familiar with the constraints and limitations to their use. Always consult the Documentation of the TLVs(R) and BEIs(R) before applying these recommendations and guidelines.

Adopted Value

Chlorobenzene

TLV:

TLV-TWA: 10 ppm
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: A3
Codes: BEI
Definitions:

A3: Confirmed Animal Carcinogen with Unknown Relevance to Humans: The agent is carcinogenic in experimental animals at a relatively high dose, by route(s) of administration, at site(s), of histologic type(s), or by mechanism(s) that may not be relevant to worker exposure. Available epidemiologic studies do not confirm an increased risk of cancer in exposed humans. Available evidence does not suggest that the agent is likely to cause cancer in humans except under uncommon or unlikely routes or levels of exposure.
BEI: The BEI notation is listed when a BEI is also recommended for the substance listed. Biological monitoring should be instituted for such substances to evaluate the total exposure from all sources, including dermal, ingestion, or non-occupational.

TLV Basis - Critical Effect(s): Liver dam
Molecular Weight: 112.56

For gases and vapors, to convert the TLV from ppm to mg/m(3):

[(TLV in ppm)(gram molecular weight of substance)]/24.45

For gases and vapors, to convert the TLV from mg/m(3) to ppm:

[(TLV in mg/m(3))(24.45)]/gram molecular weight of substance

AIHA WEEL Values for CAS108-90-7 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS108-90-7 (National Institute for Occupational Safety and Health, 2007):

Listed as: Chlorobenzene
REL:

TWA:
STEL:
Ceiling:
Carcinogen Listing: (Not Listed) Not Listed
Skin Designation: Not Listed
Note(s): See Appendix D

IDLH:

IDLH: 1000 ppm
Note(s): Not Listed

OSHA PEL Values for CAS108-90-7 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Listed as: Chlorobenzene
Table Z-1 for Chlorobenzene:

8-hour TWA:

ppm: 75

Parts of vapor or gas per million parts of contaminated air by volume at 25 degrees C and 760 torr.

mg/m3: 350

Milligrams of substances per cubic meter of air. When entry is in this column only, the value is exact; when listed with a ppm entry, it is approximate.

Ceiling Value:
Skin Designation: No
Notation(s): Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS108-90-7 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS108-90-7 (U.S. Environmental Protection Agency, 2010):

Listed as: Chlorobenzene
Final Reportable Quantity, in pounds (kilograms):

100 (45.4)

Additional Information: The following spent halogenated solvents; all spent solvent mixtures/ blends containing, before use, a total of ten percent or more (by volume) of one or more of the halogenated solvents listed below or those solvents listed in F001, F004, or F005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures.
Listed as: Chlorobenzene (D021)
Final Reportable Quantity, in pounds (kilograms):

100 (45.4)

Additional Information: Unlisted Hazardous Wastes Characteristic of Toxicity
Listed as: Benzene, chloro-
Final Reportable Quantity, in pounds (kilograms):

100 (45.4)

Additional Information:
Listed as: Chlorobenzene
Final Reportable Quantity, in pounds (kilograms):

100 (45.4)

Additional Information:

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS108-90-7 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS108-90-7 (U.S. Environmental Protection Agency, 2010b):

Listed as: Benzene, chloro-
P or U series number: U037
Footnote:
Listed as: Chlorobenzene
P or U series number: U037
Footnote:
Editor's Note: The D, F, and K series waste numbers and Appendix VIII to Part 261 -- Hazardous Constituents were not included. Please refer to 40 CFR Part 261.

EPA SARA Title III, Extremely Hazardous Substance List for CAS108-90-7 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS108-90-7 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Listed as: Chlorobenzene
Effective Date for Reporting Under 40 CFR 372.30: 1/1/87
Lower Thresholds for Chemicals of Special Concern under 40 CFR 372.28:

DOT List of Marine Pollutants for CAS108-90-7 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS108-90-7 (EPA, 2005):

Listed as: Benzene, chloro-

SHIPPING REGULATIONS

SURFACE

DOT -- Table of Hazardous Materials and Special Provisions for UN/NA Number 1134 (49 CFR 172.101, 2005):

Hazardous materials descriptions and proper shipping name: Chlorobenzene

Symbol(s): Not Listed
Hazard class or Division: 3

3: Flammable and combustible liquid. See 49 CFR section 173.120 for definitions.

Identification Number: UN1134
Packing Group: III

III: Packing Group III - indicates the degree of danger presented by the material is minor.

Label(s) required (if not excepted): 3

3: Flammable Liquid.

Special Provisions: B1, IB3, T2, TP1

B1: If the material has a flash point at or above 38 °C (100 °F) and below 93 °C (200 °F), then the bulk packaging requirements of sxn. 173.241 of this subchapter are applicable. If the material has a flash point of less than 38 °C (100 °F), then the bulk packaging requirements of sxn. 173.242 of this subchapter are applicable.
IB3: Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and 31HH2). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized, except for UN2672 (also see Special Provision IP8 in Table 3 for UN2672).
T2: Minimum test pressure (bar): 1.5; Minimum shell thickness (in mm-reference steel) (See sxn.178.274(d)): sxn.178.274(d)(2); Pressure-relief requirements (See sxn.178.275(g)): Normal; Bottom opening requirements (See sxn.178.275(d)): sxn.178.275(d)(3).
TP1: The maximum degree of filling must not exceed the degree of filling determined by the following: [Degree of filling = 97/1+alpha(tr - tf)], where tr is the maximum mean bulk temperature during transport, and tf is the temperature in degrees celsius of the liquid during filling.

Packaging Authorizations (refer to 49 CFR 173.***):

Exceptions: 150
Non-bulk packaging: 203
Bulk packaging: 242

Quantity Limitations:

Passenger aircraft or railcar: 60 L
Cargo aircraft only: 220 L

Vessel Stowage Requirements:

Vessel stowage location: A

A: The material may be stowed "on deck" or "under deck" on a cargo vessel and on a passenger vessel.

Vessel stowage other: Not Listed

ICAO International Shipping Name for UN1134 (ICAO, 2002):

Proper Shipping Name: Chlorobenzene
UN Number: 1134

LABELS

NFPA

NFPA Hazard Ratings for CAS108-90-7 (NFPA, 2002):

Listed as: Chlorobenzene
Hazard Ratings:

Health Rating (Blue): 3

(3) Seriously toxic material. Short term exposure could cause serious temporary or residual injury even though prompt medical treatment is given. Includes known or suspect small animal carcinogens, mutagens, or teratogens.

Flammability Rating (Red): 3

(3) Flammable. Liquids and solids that can be ignited under almost all ambient temperature conditions. Including liquids with a flash point below 73 degrees F and a boiling point above 100 degrees F, solid materials which form coarse dusts that burn rapidly without becoming explosive, materials which burn rapidly by reason of self-contained oxygen (ie, organic peroxides), and materials which ignite spontaneously when exposed to air.

Instability Rating (Yellow): 0

(0) Materials which are normally stable, even under fire conditions, and which are not reactive with water.

Oxidizer/Water-Reactive Designation: Not Listed

-HANDLING AND STORAGE

SUMMARY

INDUSTRIAL CHEMICALS

Occupational Exposures - where appropriate, use an organic vapor-acid gas respirator; neoprene or vinyl gloves; chemical safety goggles; rubber footwear; apron or impervious clothing for splash protection; hard hat (HSDB , 2002; NIOSH , 2002).

Biological monitoring for exposure to chlorobenzene may be accomplished by means of urinalysis for 4-chlorocatechol, a major chlorobenzene metabolite. Organic vapor air monitoring badges may be used to detect chlorobenzene in air (Yoshida et al, 1986).

Chlorobenzene is stable to air, moisture, and light at room temperature and atmospheric pressure (HSDB , 2002).

HANDLING

Spark-resistant electric equipment is preferred (HSDB , 2002).

STORAGE

CONTAINER

Containers should be kept tightly closed and protected against physical damage (HSDB , 2002).

ROOM/CABINET RECOMMENDATIONS

Inside storage should be in a standard flammable liquids storage warehouse, room, or cabinet (NFPA, 1991).
Outside or detached storage is preferred (NFPA, 1991).

INCOMPATIBILITIES

Separate from strong oxidizing materials (NFPA, 1991).

-PERSONAL PROTECTION

SUMMARY

RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Wear positive pressure self-contained breathing apparatus (SCBA).
Structural firefighters' protective clothing will only provide limited protection.

RESPIRATORY PROTECTION

Refer to "Recommendations for respirator selection" in the NIOSH Pocket Guide to Chemical Hazards on TOMES Plus(R) for respirator information.

PROTECTIVE CLOTHING

CHEMICAL PROTECTIVE CLOTHING. Search results for CAS 108-90-7.

All data are compiled from published sources and are NOT recommended specifically by Truven Health Analytics. The appearance of specific manufacturers or products in this section does not represent an endorsement by Truven Health Analytics. No attempt has been made to verify the data presented. All product recommendations should be confirmed with the specific manufacturer for verification of product performance.
CLOTHING

Neoprene

River City

Neoprene splash suits

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (River City, 1995)

Plastic Laminate

DuPont Personal Protection

CPF 3

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): 63
Permeation Rate (mcg/cm2/min): 0.7
Notes: Not Listed
Citation: (DuPont, 2002)

CPF 4

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None detected
Notes: Not Listed
Citation: (DuPont, 2002)

Responder

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None detected
Notes: Not Listed
Citation: (DuPont, 2002)

Responder Plus

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None detected
Notes: Not Listed
Citation: (DuPont, 2002)

Tychem 10,000

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): 0.003
Notes: liquid
Citation: (DuPont, 2002)

Tychem 7500

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: liquid
Citation: (DuPont, 2002)

Tychem 9400

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.001
Notes: liquid
Citation: (DuPont, 2002)

Tychem BR

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.001
Notes: Not Listed
Citation: (DuPont, 2002)

Tychem F

Degradation Rating: Not Listed
Breakthrough Time (minutes): 70
Permeation Rate (mcg/cm2/min): 0.43
Notes: Not Listed
Citation: (DuPont, 2003)

Tychem LV

Degradation Rating: Not Listed
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.001
Notes: Not Listed
Citation: (DuPont, 2003)

Tychem QC

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: liquid
Citation: (DuPont, 2002)

Tychem SL

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: liquid
Citation: (DuPont, 2002)

Tychem ThermoPro

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: Not Listed
Citation: (DuPont, 2003)

Tychem TK

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.001
Notes: liquid
Citation: (DuPont, 2002)
Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.001
Notes: Not Listed
Citation: (DuPont, 2002)

Trelleborg-Viking, Inc.

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

Polyvinyl Chloride

River City

PVC splash suits

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (River City, 1995)

Rubber Laminate

Trelleborg-Viking, Inc.

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

Viton/Butyl

Trelleborg-Viking, Inc.

Super

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.08
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

FOOTWEAR

Neoprene

LaCrosse-Rainfair Safety Products

Not specified

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (LaCrosse-Rainfair, 1997)

Polyurethane+PVC

LaCrosse-Rainfair Safety Products

Not specified

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (LaCrosse-Rainfair, 1997)

Polyurethane Blend

LaCrosse-Rainfair Safety Products

Not specified

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (LaCrosse-Rainfair, 1997)

Polyvinyl Chloride

LaCrosse-Rainfair Safety Products

Not specified

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (LaCrosse-Rainfair, 1997)

Rubber blend

LaCrosse-Rainfair Safety Products

Not specified

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (LaCrosse-Rainfair, 1997)

GLOVES

Butyl

Best Manufacturing

Butyl 878

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: Tested with Limited Exposure Method (ASTM F 1383)
Citation: (Best Manufacturing, 2004)
Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2004)

Butyl II 874R

Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): 99
Permeation Rate (mcg/cm2/min): 244
Notes: Not Listed
Citation: (Best Manufacturing, 2002)

North Safety Products

Butyl Series

Degradation Rating: Poor
Breakthrough Time (minutes): 35
Permeation Rate (mcg/cm2/min): 308000
Notes: Not Listed
Citation: (North, 2002)

Butyl/Neoprene

Comasec Safety, Inc

Butyl+Plus

Degradation Rating: Not reported
Breakthrough Time (minutes): < 10
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Fluorosolv

Perfect Fit Glove Co, LLC

Cobra F-467

Degradation Rating: Excellent
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None Detected
Notes: 99.5%
Citation: (MAPA Professional, 2003)

Latex

Memphis Glove Company

5290 Series Flock-Lined Latex

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not tested
Permeation Rate (mcg/cm2/min): Not Reported
Notes: Not Listed
Citation: (Memphis Glove Company, 2001)

Natural Rubber

Best Manufacturing

Original Nitty Gritty

Degradation Rating: Not Recommended (after 60 minutes of testing)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2004)
Degradation Rating: Not Recommended (after 60 minutes of testing)
Breakthrough Time (minutes): 27
Permeation Rate (mcg/cm2/min): 86
Notes: Tested under limited exposure method (ASTM F 1383)
Citation: (Best Manufacturing, 2004)

Boss Manufacturing Company

Not specified

Degradation Rating: Poor
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (Boss Manufacturing Company, 1998)

Comasec Safety, Inc

Flexigum

Degradation Rating: Not reported
Breakthrough Time (minutes): non measured
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Montgomery Safety Products

Natural Rubber

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (Montgomery Safety Products, 1995)

Neoprene

Best Manufacturing

Chloroflex 1823

Degradation Rating: Not Recommended (after 30 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)

Chloroflex 723

Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)
Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): 8
Permeation Rate (mcg/cm2/min): 78
Notes: tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2002)

Neoprene 6780 Series

Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)
Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): 30
Permeation Rate (mcg/cm2/min): 91
Notes: tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2002)

Ultraflex Neoprene 32

Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): 17
Permeation Rate (mcg/cm2/min): 87
Notes: tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2002)
Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)

Boss Manufacturing Company

Not specified

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (Boss Manufacturing Company, 1998)

MAPA Spontex, Inc.

Chem-ply/N-440

Degradation Rating: Poor
Breakthrough Time (minutes): 28
Permeation Rate (mcg/cm2/min): 275.8
Notes: 99.50%
Citation: (MAPA Professional, 2004)

Memphis Glove Company

5410S Series Flock-Lined Neoprene

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not tested
Permeation Rate (mcg/cm2/min): Not Reported
Notes: Not Listed
Citation: (Memphis Glove Company, 2001)

6912 Neomax Neoprene

Degradation Rating: 1 (on a scale of 0 to 6, with 0 offering the least chemical resistance)
Breakthrough Time (minutes): 12
Permeation Rate (mcg/cm2/min): Not Reported
Notes: Not Listed
Citation: (Memphis Glove Company, 2001)

Montgomery Safety Products

Neoprene

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (Montgomery Safety Products, 1995)

Neoprene+NatR

Best Manufacturing

Chem Master CHM

Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)
Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): 8
Permeation Rate (mcg/cm2/min): 78
Notes: tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2002)

Nitrile

Best Manufacturing

N-DEX 7005

Degradation Rating: Not Recommended (after 60 minutes of testing)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2004)

N-DEX 8005

Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): 6
Permeation Rate (mcg/cm2/min): 131
Notes: tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2002)
Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)

Nitri-Solve 727

Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): 66
Permeation Rate (mcg/cm2/min): 48
Notes: tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2002)
Degradation Rating: Not Recommended (after 60 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)

Ultimate N-Dex 9905

Degradation Rating: Not Recommended (after 60 minutes of testing)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2004)
Degradation Rating: Not Recommended (after 60 minutes of testing)
Breakthrough Time (minutes): 6
Permeation Rate (mcg/cm2/min): 131
Notes: Tested with Limited Exposure Method (ASTM F 1383)
Citation: (Best Manufacturing, 2004)

Ultraflex Nitrile 22R

Degradation Rating: Not Recommended (after 60 minutes of testing)
Breakthrough Time (minutes): None Detected
Permeation Rate (mcg/cm2/min): 107
Notes: Tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2004)
Degradation Rating: Not Recommended (after 60 minutes of testing)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2004)

Boss Manufacturing Company

Not specified

Degradation Rating: Poor
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (Boss Manufacturing Company, 1998)

Comasec Safety, Inc

Comatril

Degradation Rating: Not reported
Breakthrough Time (minutes): < 10
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Flexiproof

Degradation Rating: Not reported
Breakthrough Time (minutes): < 10
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

MAPA Spontex, Inc.

Stansolv/A-14

Degradation Rating: Not Tested
Breakthrough Time (minutes): 42
Permeation Rate (mcg/cm2/min): 294.4
Notes: 99%
Citation: (MAPA Professional, 2004)

Memphis Glove Company

5320 Series Flock-Lined Nitrile

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not tested
Permeation Rate (mcg/cm2/min): Not Reported
Notes: Not Listed
Citation: (Memphis Glove Company, 2001)

9750 Series Predator Nitrile

Degradation Rating: 1 (on a scale of 0 to 6, with 0 offering the least chemical resistance)
Breakthrough Time (minutes): 24
Permeation Rate (mcg/cm2/min): Not Reported
Notes: Not Listed
Citation: (Memphis Glove Company, 2001)

Montgomery Safety Products

M-Tech

Degradation Rating: Not Recommended
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (Montgomery Safety Products, 1995)

North Safety Products

Nitrile Series

Degradation Rating: Poor
Breakthrough Time (minutes): Insufficient Data
Permeation Rate (mcg/cm2/min): Insufficient Data
Notes: Not Listed
Citation: (North, 2002)

Perfect Fit Glove Co, LLC

Cobra F-466

Degradation Rating: Excellent
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None detected
Notes: 0.99
Citation: (MAPA Professional, 2003)

Nitrile+PVC

Best Manufacturing

Hustler 725R

Degradation Rating: Poor (after 60 minutes)
Breakthrough Time (minutes): 22
Permeation Rate (mcg/cm2/min): 25
Notes: tested through limited exposure method (ATSM F 1383)
Citation: (Best Manufacturing, 2002)
Degradation Rating: Poor (after 60 minutes)
Breakthrough Time (minutes): Not Recommended
Permeation Rate (mcg/cm2/min): Not Recommended
Notes: Not Listed
Citation: (Best Manufacturing, 2002)

Plastic Laminate

North Safety Products

Silver Shield

Degradation Rating: Excellent
Breakthrough Time (minutes): Insufficient Data
Permeation Rate (mcg/cm2/min): Insufficient Data
Notes: Not Listed
Citation: (North, 2002)

Polyvinyl Chloride

Boss Manufacturing Company

Not specified

Degradation Rating: Poor
Breakthrough Time (minutes): Not Listed
Permeation Rate (mcg/cm2/min): Not Listed
Notes: Not Listed
Citation: (Boss Manufacturing Company, 1998)

Comasec Safety, Inc

Comastar

Degradation Rating: Not reported
Breakthrough Time (minutes): non measured
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Normal

Degradation Rating: Not reported
Breakthrough Time (minutes): < 10
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Memphis Glove Company

6400 Actifresh Green PVC

Degradation Rating: 1 (on a scale of 0 to 6, with 0 offering the least chemical resistance)
Breakthrough Time (minutes): 12
Permeation Rate (mcg/cm2/min): Not Reported
Notes: Not Listed
Citation: (Memphis Glove Company, 2001)

Polyvinyl Chloride/Nitrile

Comasec Safety, Inc

Multi+plus

Degradation Rating: Not reported
Breakthrough Time (minutes): < 10
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Viton

North Safety Products

Viton Series

Degradation Rating: Excellent
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None Detected
Notes: Not Listed
Citation: (North, 2002)

Viton/Butyl

Best Manufacturing

Best Viton 892

Degradation Rating: Excellent (after 60 minutes)
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None detected
Notes: Not Listed
Citation: (Best Manufacturing, 2002)

Viton over Butyl

Best Manufacturing

Viton #890

Degradation Rating: Not Tested
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None Detected
Notes: Not Listed
Citation: (Best Manufacturing, 2004)
Degradation Rating: Not Tested
Breakthrough Time (minutes): >240
Permeation Rate (mcg/cm2/min): None Detected
Notes: Tested with limited exposure method (ASTM F 1383)
Citation: (Best Manufacturing, 2004)

GENERAL INFORMATION

This section provides a compilation of chemical resistance information and test data for specific protective clothing products. Chemical resistance information includes both degradation resistance ratings and permeation resistance data. This information is designed to assist in the selection of appropriate protective clothing. Only data on specific products and manufacturers are included. Generic information or recommendations are not provided since significant differences can exist in the chemical resistance for apparent similar product types.
Specific product information is organized by general product type (gloves, garments, and footwear), material type, and manufacturer. The category 'garments' may include totally encapsulating suits, splash suits, as well as other items (e.g., coveralls, jackets, and aprons). Specific manufacturers should be contacted to determine the features of available styles/models.
In addition to chemical resistance information, there are many critical variables in the selection of protective clothing which cannot be represented in this summary of the literature. Some factors to be considered in choosing protective clothing include, but are not limited to: overall clothing integrity, physical hazard resistance, durability, human factors, ease of decontamination, and cost. Overall clothing integrity refers to a specific design's ability to offer consistent protection for all clothing-covered areas of the body. Physical hazards include resisting the effects of abrasion, cuts, tears, and punctures. Human factors entail effects on wearer mobility, visibility, and hearing for garments; dexterity, tactility, and grip for gloves; ankle support and weight for footwear; and, any effect of the clothing on the function of the wearer. There are several variations in the design for gloves, garments, and footwear that affect these factors. Protective clothing must properly be sized and correctly fit the wearer to ensure its proper use and function.
As required in the U.S.A., protective clothing should be selected based on a risk assessment of the workplace. This risk assessment must account for the identification of existing as well as potential hazards and involve the recommendation of protective clothing appropriate for the identified hazards. Therefore, the recommendations in this section should not be used as the sole basis for decisions on choice of protective clothing, but rather should be used as a tool by qualified occupational health and safety professionals or other technically qualified persons in conjunction with a review of all mitigating factors. Consult the OSHA PPE Standard (29 CFR 1910.132 - 1910.138) for regulations and additional guidance regarding the selection and use of protective clothing and equipment. For general information on protective clothing selection, refer to the "PERSONAL PROTECTIVE EQUIPMENT - OSHA PUB 3077" document.
PROTECTIVE CLOTHING SELECTION

Determine the type of protective clothing item needed based on a risk assessment (e.g., gloves, garments, footwear).
For high risk situations, choose clothing that covers all parts of the body that may be exposed. In many cases, multiple clothing items will be required. Low risk situations may permit partial body protective clothing. Select protective clothing products that have reported chemical resistance data. High risk situations involving full body clothing or extended chemical contact often require permeation resistance data to determine the barrier effectiveness of materials used in the construction of clothing. Relatively low risk situations, where only splash or incidental exposure occur, may allow use of protective clothing based on degradation or penetration resistance data. Specifics on the interpretation of chemical resistance data are presented below.
Other factors must be considered in addition to chemical resistance. The selected chemical protective clothing item should offer the optimal combination of protection against identified hazards while allowing maximum function and comfort.

INTERPRETATION OF DEGRADATION RATINGS

Degradation refers to physical changes in a material as the result of chemical exposure. Degradation may become evident in visible changes, such as discoloration, swelling, delamination, deterioration, or disintegration. Degradation effects may also be measured by weight change or other changes in a material's physical properties (e.g., strength, elasticity, hardness).
Degradation resistance ratings are provided by manufacturers to rate the amount of degradation that occurs for a particular protective clothing material when contacted by a chemical. All degradation ratings are qualitative and include ratings, such as "EXCELLENT," "GOOD," "FAIR," "POOR," and "NOT RECOMMENDED." There is no standard test method for the measurement of chemical degradation resistance; therefore, manufacturer ratings may be based on different testing approaches. This makes comparison of degradation ratings between manufacturers unreliable.
The use of degradation resistance ratings alone to recommend protective clothing, particularly for high hazard situations, should be avoided. Degradation resistance testing does not directly assess the barrier quality of protective clothing, since materials can show relatively little degradation but still allow either permeation or penetration by a chemical. Degradation resistance ratings can be used to exclude protective clothing materials from consideration. Protective clothing materials with a "NOT RECOMMENDED" degradation resistance rating should never be used.
For some products, the rating "NO PENETRATION" is provided. This refers to penetration resistance test results that are based on a different procedure (American Society for Testing and Materials (ASTM) Standard Test Method F 903). Penetration resistance testing involves placing a material sample in a test cell, exposing the exterior side of the material to a chemical, and then observing the interior side of the material for visible signs of liquid penetration. Part of the test is conducted at an elevated pressure. Test results are reported as pass (no penetration) or fail (penetration detected). Unlike degradation testing, penetration testing provides an assessment of protective clothing material barrier performance. Since penetration resistance testing examines only observable amounts of liquid penetration, permeation may still occur. The use of penetration resistance data must be restricted to liquid chemicals, and should be limited to scenarios where there is no reasonable vapor exposure hazard under the conditions of exposure.

INTERPRETATION OF PERMEATION DATA

Permeation is the process of chemical movement through a material on a molecular level. Permeation resistance refers to the ability of a material to retard or prevent chemical movement through it. Permeation may occur without any visible signs of degradation.
Permeation resistance is measured using a test cell which is divided into two halves by a protective clothing specimen. Chemical is placed on the challenge side, while the collection side is periodically monitored for permeating chemical. Permeation data were obtained in accordance with the American Society for Testing and Materials (ASTM) Standard Test Method F 739 (Resistance of Materials Used in Protective Clothing to Permeation by Liquids and Gases), unless stated otherwise. In the case of chemicals that are classified as warfare agents, the data were obtained in accordance with the Military Standard 282 (MIL-STD-282) (Military Standard, Filter Units, Protective Clothing, Gas-Mask Components, and Related Products: Performance Test Methods).
Permeation rate is the amount of chemical that passes through a material for a measured surface area per unit time. In this section, permeation rate is expressed in micrograms per square centimeter per minute (mcg/cm(2)/min). The reported permeation rate is either the steady-state rate or the maximum rate observed during testing. In some cases, very large permeation rates exceed measurement techniques and are reported as ">" (greater than) or "HIGH."
Breakthrough time is the elapsed time, in minutes, from the time the chemical comes in contact with the material exterior surface, to the time that chemical is detected on the interior surface. When no breakthrough is detected, the breakthrough time is report as ">" the testing period. If permeation breakthrough is rapid, results are reported as "<" (less than) the earlier sampling time or as "IMMEDIATELY" (which usually means breakthrough in less than 4 minutes).
The breakthrough time should exceed the expected use period of the selected protective clothing. Additionally, there are several other factors that must be taken into account to provide appropriate protection.
Permeation testing is usually conducted with full strength, undiluted chemical for the duration of the test period. Actual exposures may involve diluted chemical for short or intermittent exposure periods.
Permeation testing is usually conducted at room temperature. Permeation occurs faster at elevated temperatures (short breakthrough times and higher permeation rates) and slower at reduced temperatures (long breakthrough times and lower permeation rates).
Permeation resistance of mixtures cannot usually be determined on the basis of the individual chemicals making up the mixture. Synergistic effects may occur and result in more rapid permeation than accounted for by the individual mixture chemicals.
Permeation rates may be used to calculate potential wearer exposure; however, several assumptions must be made about the extent of exposure and condition of clothing wear. Furthermore, there are few chemicals with dermal exposure limits, making it difficult to determine an acceptable skin exposure level.

COMPANY INFORMATION

Best Manufacturing 579 Edison Street Menlo, GA 30731 USA Phone: (706) 862-2302 Fax: (706) 862-6000 Toll-Free: (800) 241-0323 Website: http://www.bestglove.com Email: USA@bestglove.com
Boss Manufacturing Company 221 W. First Street Kewanee, IL 61443 USA Phone: (309) 852-2131 Fax: (309) 852-0848 Toll-Free: (800) 447-4581 Website: http://www.bossgloves.com Email: custserv@bossgloves.com
Comasec Safety, Inc 8 Niblick Road Box 1219 Enfield, CT 06083-1219 USA Phone: (860) 741-2207 Fax: (860) 741-0881 Toll-Free: (800) 333-0219 Website: http://www.comasecsafety.com Email: info@comasecsafety.com
DuPont Personal Protection P. O. Box 80705 Wilmington, DE 19880-0705 USA Phone: (302) 774-1000 Toll-Free: (800) 931-3456 Website: http://personalprotection.dupont.com Email: personalprotection@usa.dupont.com
LaCrosse-Rainfair Safety Products 18550 NE Riverside Parkway Portland, OR 97230 USA Phone: (800) 557-7246 Fax: (800) 558-0188 Toll-Free: (800) 557-7246 Website: http://www.lacrosserainfair.com Email: info@lacrossesafety.com
MAPA Spontex, Inc. 100 Spontex Dr. Columbia, TN 38401 USA Phone: (800) 537--2897 Fax: (800) 537--3299 Website: http://www.mapaglove.com Email: sales@mapaglove.com
Memphis Glove Company 5321 East Shelby Dr. Memphis, TN 38188 USA Phone: (901) 795-0672 Fax: (901) 794-7622 Toll-Free: (800) 955-6887 Website: http://www.memphisglove.com
Montgomery Safety Products 1117 Marion Avenue, SW Canton, OH 44707 USA Phone: (800) 562-0600 Toll-Free: (800) 562-0600 Website: http://www.montgomerysafety.com Email: gloves@montgomerysafety.com
North Safety Products 2000 Plainfield Pike Cranston, RI 02921 USA Phone: (800) 430-4110 Fax: (800) 572-6346 Toll-Free: (800) 430-4110 Website: http://www.northsafety.com Email: marketing@northsafety.com
Perfect Fit Glove Co, LLC 85 Innsbruck Dr. Buffalo, NY 14227 USA Phone: (800) 245-6837 Fax: (716) 668-3224 Toll-Free: (800) 245-6837 Website: http://www.perfectfitglove.com Email: perfectfitglove@perfectfitglove.com
River City 5321 East Shelby Dr. Memphis, TN 38188 USA Phone: (800) 888-0347 Fax: (901) 795-3815 Toll-Free: (800) 888-0347 Website: http://www.protectivewear.com Email: support@protectivewear.com
Trelleborg-Viking, Inc. 170 West Road Suite 1 Portsmouth, NH 03801 USA Phone: (603) 436-1236 Fax: (603) 436-1392 Toll-Free: (800) 344-4458 Website: http://www.trelleborg.com/protective/ Email: protective@trelleborg.com

REFERENCES

CHEMICAL PROTECTIVE CLOTHING CITATIONS

The following sources were consulted for chemical protective clothing data:

(Ansell-Edmont, 2001)
(Bata Shoe Company, 1995)
(Best Manufacturing, 2002)
(Best Manufacturing, 2004)
(Boss Manufacturing Company, 1998)
(ChemFab Corporation, 1993)
(Comasec Safety, Inc., 2003)
(Comasec Safety, Inc., 2003a)
(DuPont, 2002)
(DuPont, 2002)
(DuPont, 2003)
(Guardian Manufacturing Group, 2001)
(ILC Dover, Inc., 1998)
(Kappler Inc., 2001)
(Kimberly-Clark, 2002)
(LaCrosse-Rainfair, 1997)
(MAPA Professional, 2003)
(MAPA Professional, 2004)
(Mar-Mac Manufacturing, Inc, 1995)
(Marigold Industrial, 2003)
(Memphis Glove Company, 2001)
(Montgomery Safety Products, 1995)
(Nat-Wear, 2001)
(Neese Industries, Inc., 2003)
(North, 2002)
(North, 2002)
(Playtex, 1995)
(River City, 1995)
(Safety 4, 2002)
(Servus, 1995)
(Standard Safety Equipment, 1995)
(Tingley, 2002)
(Trelleborg-Viking, Inc., 2001)
(Trelleborg-Viking, Inc., 2002)
(Wells Lamont Industrial, 2002)
(Workrite, 1997)

-PHYSICAL HAZARDS

FIRE HAZARD

SUMMARY

POTENTIAL FIRE OR EXPLOSION HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)
- HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
- Vapors may travel to source of ignition and flash back.
- Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks).
- Vapor explosion hazard indoors, outdoors or in sewers.
- Those substances designated with a "P" may polymerize explosively when heated or involved in a fire.
- Runoff to sewer may create fire or explosion hazard.
- Containers may explode when heated.
- Many liquids are lighter than water.
Chlorobenzene is a dangerous fire hazard when exposed to heat or flame (Lewis, 1992).

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS108-90-7 (NFPA, 2002):

Listed as: Chlorobenzene
Flammability Rating: 3

(3) Flammable. Liquids and solids that can be ignited under almost all ambient temperature conditions. Including liquids with a flash point below 73 degrees F and a boiling point above 100 degrees F, solid materials which form coarse dusts that burn rapidly without becoming explosive, materials which burn rapidly by reason of self-contained oxygen (ie, organic peroxides), and materials which ignite spontaneously when exposed to air.

FIRE CONTROL/EXTINGUISHING AGENTS

FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

CAUTION: All these products have a very low flash point: Use of water spray when fighting fire may be inefficient.

SMALL FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Dry chemical, CO2, water spray or regular foam.

LARGE FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Water spray, fog or regular foam.
Do not use straight streams.
Move containers from fire area if you can do it without risk.

TANK OR CAR/TRAILER LOAD FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Fight fire from maximum distance or use unmanned hose holders or monitor nozzles.
Cool containers with flooding quantities of water until well after fire is out.
Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.
ALWAYS stay away from tanks engulfed in fire.
For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

NFPA Extinguishing Methods for CAS108-90-7 (NFPA, 2002):

Listed as: Chlorobenzene
Extinguishing Method(s): 4

4: "Water may ineffective, except as a blanket" applies if a liquid has a flash point below 100 degrees F (37.8 degrees C), the specific gravity is 1.1 or greater, and the liquid is not water soluble. In this case, water should be gently applied as a fine spray or fog to the liquid surface.

Approach fire from upwind to avoid hazardous vapors and toxic decomposition products (NFPA, 1991).

To fight fire, use foam, carbon dioxide, dry chemical, or water (Lewis, 1992; NFPA, 1991).

COMBUSTION TOXICITY

Combustion may produce irritant and toxic gases; combustion by-products include phosgene and hydrogen chloride gases (NFPA, 1991).

EXPLOSION HAZARD

Chlorobenzene is a moderate explosion hazard when exposed to heat or flame (Lewis, 1992).

Chlorobenzene forms a potentially explosive reaction with powdered sodium or phosphorus trichloride + sodium (Lewis, 1992).

DUST/VAPOR HAZARD

Combustion may produce irritant and toxic gases; combustion by-products include phosgene and hydrogen chloride gases (NFPA, 1991).

Chlorobenzene vapor is narcotic (Lewis, 1992; NFPA, 1991).

Vapors are heavier than air and may travel to a source of ignition and flash back (NFPA, 1991).

REACTIVITY HAZARD

Chlorobenzene forms a violent reaction with silver perchlorate or dimethyl sulfoxide (Lewis, 1992; NFPA, 1991).

It reacts vigorously with oxidizers (Lewis, 1992).

Chlorobenzene is a dangerous fire hazard (and moderate explosion hazard) when exposed to heat or flame (Lewis, 1992).

Combustion may produce irritant and toxic gases, combustion by-products include phosgene and hydrogen chloride gases (NFPA, 1991).

Chlorobenzene forms a potentially explosive reaction with powdered sodium or phosphorus trichloride + sodium (Lewis, 1992).

EVACUATION PROCEDURES

SUMMARY

Editor's Note: This material is not listed in the Table of Initial Isolation and Protective Action Distances.

LARGE SPILL - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Consider initial downwind evacuation for at least 300 meters (1000 feet).

FIRE - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

PUBLIC SAFETY MEASURES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number:

MEXICO:

SETIQ:

01-800-00-214-00 in the Mexican Republic;
For calls originating in Mexico City and the Metropolitan Area: 5559-1588;
For calls originating elsewhere, call: 011-52-555-559-1588.

CENACOM:

01-800-00-413-00 in the Mexican Republic;
For calls originating in Mexico City and the Metropolitan Area: 5550-1496, 5550-1552, 5550-1485, or 5550-4885;
For calls originating elsewhere, call: 011-52-555-550-1496, or 011-52-555-550-1552; 011-52-555-550-1485, or 011-52-555-550-4885.

ARGENTINA:

CIQUIME:

0-800-222-2933 in the Republic of Argentina;
For calls originating elsewhere, call: +54-11-4613-1100.

BRAZIL:

PRÓ-QUÍMICA:

0-800-118270 (Toll-free in Brazil);
For calls originating elsewhere, call: +55-11-232-1144 (Collect calls are accepted).

COLUMBIA:

CISPROQUIM:

01-800-091-6012 in Colombia;
For calls originating in Bogotá, Colombia, call: 288-6012;
For calls originating elsewhere, call: 011-57-1-288-6012.

CANADA:

CANUTEC:

613-996-6666 (Collect calls are accepted);
*666 cellular (in Canada only).

UNITED STATES:

CHEMTREC®:

1-800-424-9300 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
703-527-3887 for calls originating elsewhere (Collect calls are accepted).

CHEM-TEL, INC.:

1-800-255-3924 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
813-248-0585 for calls originating elsewhere (Collect calls are accepted).

INFOTRAC:

1-800-535-5053 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
352-323-3500 for calls originating elsewhere (Collect calls are accepted).

3E COMPANY:

1-800-451-8346 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
760-602-8703 for calls originating elsewhere (Collect calls are accepted).

NATIONAL RESPONSE CENTER (NRC):

1-800-424-8802 - (24 hours) (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
202-267-2675 for calls in the District of Columbia.

MILITARY SHIPMENTS:

703-697-0218 - Explosives/ammunition incidents (Collect calls are accepted);
1-800-851-8061 - All other dangerous goods incidents.

NATIONWIDE POISON CONTROL CENTER (United States only):

1-800-222-1222 (Toll-free in the U.S.).

For additional details see the section entitled "WHO TO CALL FOR ASSISTANCE" under the ERG Instructions.
As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions.
Keep unauthorized personnel away.
Stay upwind.
Keep out of low areas.
Ventilate closed spaces before entering.

AIHA ERPG Values for CAS108-90-7 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS108-90-7 (U.S. Department of Energy, Office of Emergency Management, 2010):

Listed as Chlorobenzene; (Benzene chloride)
TEEL-0 (units = ppm): 10
TEEL-1 (units = ppm): 10
TEEL-2 (units = ppm): 150
TEEL-3 (units = ppm): 400
Definitions:

TEEL-0: The threshold concentration below which most people will experience no adverse health effects.
TEEL-1: The airborne concentration (expressed as ppm [parts per million] or mg/m(3) [milligrams per cubic meter]) of a substance above which it is predicted that the general population, including susceptible individuals, could experience notable discomfort, irritation, or certain asymptomatic, nonsensory effects. However, these effects are not disabling and are transient and reversible upon cessation of exposure.
TEEL-2: The airborne concentration (expressed as ppm or mg/m(3)) of a substance above which it is predicted that the general population, including susceptible individuals, could experience irreversible or other serious, long-lasting, adverse health effects or an impaired ability to escape.
TEEL-3: The airborne concentration (expressed as ppm or mg/m(3)) of a substance above which it is predicted that the general population, including susceptible individuals, could experience life-threatening adverse health effects or death.

AEGL Values for CAS108-90-7 (National Research Council, 2010; National Research Council, 2009; National Research Council, 2008; National Research Council, 2007; NRC, 2001; NRC, 2002; NRC, 2003; NRC, 2004; NRC, 2004; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; United States Environmental Protection Agency Office of Pollution Prevention and Toxics, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; 62 FR 58840, 1997; 65 FR 14186, 2000; 65 FR 39264, 2000; 65 FR 77866, 2000; 66 FR 21940, 2001; 67 FR 7164, 2002; 68 FR 42710, 2003; 69 FR 54144, 2004):

Listed as: Chlorobenzene
Proposed Value:

AEGL-1

10 min exposure:

ppm: 10 ppm
mg/m3: 47 mg/m(3)

30 min exposure:

ppm: 10 ppm
mg/m3: 47 mg/m(3)

1 hr exposure:

ppm: 10 ppm
mg/m3: 47 mg/m(3)

4 hr exposure:

ppm: 10 ppm
mg/m3: 47 mg/m(3)

8 hr exposure:

ppm: 10 ppm
mg/m3: 47 mg/m(3)

Definitions:

AEGL-1 is the airborne concentration of a substance above which it is predicted that the general population, including susceptible individuals, could experience notable discomfort, irritation, or certain asymptomatic non-sensory effects. However, the effects are not disabling, are transient, and are reversible upon cessation of exposure.

Listed as: Chlorobenzene
Proposed Value:

AEGL-2

10 min exposure:

ppm: 430 ppm
mg/m3: 2021 mg/m(3)

30 min exposure:

ppm: 300 ppm
mg/m3: 1410 mg/m(3)

1 hr exposure:

ppm: 150 ppm
mg/m3: 705 mg/m(3)

4 hr exposure:

ppm: 150 ppm
mg/m3: 705 mg/m(3)

8 hr exposure:

ppm: 150 ppm
mg/m3: 705 mg/m(3)

Definitions:

AEGL-2 is the airborne concentration of a substance above which it is predicted that the general population, including susceptible individuals, could experience irreversible or other serious, long-lasting adverse health effects or an impaired ability to escape.

Listed as: Chlorobenzene
Proposed Value:

AEGL-3

10 min exposure:

ppm: 1100 ppm
mg/m3: 5170 mg/m(3)

30 min exposure:

ppm: 800 ppm
mg/m3: 3760 mg/m(3)

1 hr exposure:

ppm: 400 ppm
mg/m3: 1880 mg/m(3)

4 hr exposure:

ppm: 400 ppm
mg/m3: 1880 mg/m(3)

8 hr exposure:

ppm: 400 ppm
mg/m3: 1880 mg/m(3)

Definitions:

AEGL-3 is the airborne concentration of a substance above which it is predicted that the general population, including susceptible individuals, could experience life-threatening health effects or death.

NIOSH IDLH Values for CAS108-90-7 (National Institute for Occupational Safety and Health, 2007):

IDLH: 1000 ppm
Note(s): Not Listed

CONTAINMENT/WASTE TREATMENT OPTIONS

SUMMARY

SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)
- ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area).
- All equipment used when handling the product must be grounded.
- Do not touch or walk through spilled material.
- Stop leak if you can do it without risk.
- Prevent entry into waterways, sewers, basements or confined areas.
- A vapor suppressing foam may be used to reduce vapors.
- Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.
- Use clean non-sparking tools to collect absorbed material.
RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)
- Wear positive pressure self-contained breathing apparatus (SCBA).
- Structural firefighters' protective clothing will only provide limited protection.
At the time of this review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices (HSDB , 1993).
ENVIRONMENTAL CONSIDERATIONS - LAND SPILL (AAR, 1987)
- Dig a pit, pond, lagoon, or holding area to contain liquid or solid material.
- Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete.
- Absorb bulk liquid with fly ash, cement powder, or commercial sorbents.
- Apply "universal" gelling agent to immobilize spill.
- Apply appropriate foam to diminish vapor and fire hazard.
ENVIRONMENTAL CONSIDERATIONS - WATER SPILL (AAR, 1987)
- Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom.
- If dissolved in region of 10 parts per million or greater concentration, apply activated carbon at ten times the spilled amount.
- Remove trapped material with suction hoses.
- Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
ENVIRONMENTAL CONSIDERATIONS - AIR SPILL (AAR, 1987)
- Apply water spray or mist to knock down vapors.
- Combustion products include corrosive or toxic vapors.
Chlorobenzene is a good candidate for liquid injection incineration, rotary kiln incineration, and fluidized bed incineration (HSDB , 1993).
Activated carbon, biological treatment, and air stripping are all potential wastewater treatment technologies for chlorobenzene (HSDB , 1993).

LARGE LEAK/SPILL

LARGE SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)
- Dike far ahead of liquid spill for later disposal.
- Water spray may reduce vapor; but may not prevent ignition in closed spaces.

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

AIR: Reaction with hydroxyl radicals is the dominant removal mechanism (estimated half-life of 9 days) with the formation of chlorophenols. Reaction in polluted air with nitric oxide is somewhat faster and produces chloronitrobenzene and chloronitrophenols. Photolysis would proceed at a much slower rate, with monochlorobiphenyl being produced (HSDB , 1993).

WATER: The primary loss will be due to evaporation. The rate of evaporation will depend on the wind speed and water movement. The half-life for evaporation is approximately 4.5 hours with moderate wind speed. Biodegradation will occur during the warmer seasons and will proceed more rapidly in fresh water than in estuarine and marine systems. The rate will also depend on the acclimation of microbial communities to chlorobenzene or related chemicals. One reported half-life for an estuarine river with near natural conditions (22 degrees C) is 75 days. A moderate amount of adsorption will occur onto organic sediments. Little bioconcentration is expected into fish and food products (HSDB , 1993).

SOIL: Since chlorobenzene is fairly volatile, much of it will be lost to the atmosphere. It is relatively mobile in sandy soil and aquifer material and biodegrades very slowly or not at all in these soils. Therefore, it can be expected to leach into the groundwater. It has a moderate adsorption onto organic soil and if retained long enough it will biodegrade and even mineralize in soil. Degradation will generally be slow, but fairly rapid mineralization (20%/week) has been reported in one study. Acclimation of soil microorganisms is an important factor (HSDB , 1993).

ENVIRONMENTAL FATE AND KINETICS

OTHER

OTHER
- AIR: Reaction with hydroxyl radicals is the dominant removal mechanism for chlorobenzene, with an estimated half-life of 9 days (HSDB , 1993).
- WATER: The half-life for evaporation of chlorobenzene from water is approximately 4.5 hours with moderate wind speed. One reported biodegradation half-life for an estuarine river with near natural conditions (22 degrees C) is 75 days (HSDB , 1993).

ENVIRONMENTAL TOXICITY

ECOTOXICITY VALUES (HSDB , 1993):

TLm, Pimephales promelas (fathead minnow), 29 to 39 mg/L/24 to 96 hours, conditions of bioassay not specified
TLm, Lepomis macrochirus (bluegill sunfish), 24 mg/L/24 to 96 hours, conditions of bioassay not specified
TLm, Poecilia reticulata (guppy), 45 mg/L/24 to 96 hours, conditions of bioassay not specified
LC50, Poecilia reticulata (guppy), 19 ppm/14 days, conditions of bioassay not specified
LD50, Salmo gairdnerii (rainbow trout), 1.8 mg/kg/24 hours, conditions of bioassay not specified
LC50, Pimephales promelas (fathead minnow), 16.9 mg/L/96 hours, flow-through bioassay

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

112.56 (Lewis, 2000)

DESCRIPTION/PHYSICAL STATE

ODOR: Almond-like (ACGIH, 2001); Faint, not unpleasant odor (Lewis, 2000; Budavari, 1996); Pronounced and unpleasant at 200 ppm (Hathaway et al, 1991); Like that of mothballs or benzene (Bingham et al, 2001); Mild amine; mild aromatic (HSDB , 2002);

COLOR: Colorless to yellowish, very refractive liquid (ACGIH, 2001; (Budavari, 1996)

SOLUBILITY: Virtually insoluble in water (sinks to bottom); freely soluble in ether, chloroform, alcohol, and benzene (ACGIH, 2001).

No information found at the time of this review.

VAPOR PRESSURE

10 mmHg (at 22.2 degrees C) (Lewis, 2000)

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

1.107 (at 20/4 degrees C) (Budavari, 1996)

FREEZING/MELTING POINT

FREEZING POINT

-55 degrees C (Budavari, 1996)

MELTING POINT

-45 degrees C (Budavari, 1996)

BOILING POINT

131-132 degrees C (Budavari, 1996)

FLASH POINT

29.4 degrees C; 85 degrees F (closed cup) (Sax & Lewis, 1987; Lewis, 2000)

AUTOIGNITION TEMPERATURE

1180 degrees F (Lewis, 2000)

EXPLOSIVE LIMITS

LOWER

1.3% (Lewis, 2000)

UPPER

7.1% (Lewis, 2000)

SOLUBILITY

IN WATER

Chlorobenzene is insoluble in water (Budavari, 1996).
0.049 g/100 mL (at 20 degrees C) (Clayton & Clayton, 1981)

IN ORGANIC SOLVENTS

It is freely soluble in alcohol, benzene, chloroform, and ether (Budavari, 1996).

-REFERENCES

GENERAL BIBLIOGRAPHY

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65 FR 77866: Notice of the National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances - Proposed AEGL Values, Environmental Protection Agency, NAC/AEGL Committee. National Archives and Records Administration (NARA) and the Government Publishing Office (GPO), Washington, DC, 2000.

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67 FR 7164: Notice of the National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances - Proposed AEGL Values, Environmental Protection Agency, NAC/AEGL Committee. National Archives and Records Administration (NARA) and the Government Publishing Office (GPO), Washington, DC, 2002.

68 FR 42710: Notice of the National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances - Proposed AEGL Values, Environmental Protection Agency, NAC/AEGL Committee. National Archives and Records Administration (NARA) and the Government Publishing Office (GPO), Washington, DC, 2003.

69 FR 54144: Notice of the National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances - Proposed AEGL Values, Environmental Protection Agency, NAC/AEGL Committee. National Archives and Records Administration (NARA) and the Government Publishing Office (GPO), Washington, DC, 2004.

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CHLOROBENZENE

Classification | Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents