CALCIUM CHROMATE

Editor's Note: This material is not listed in the Emergency Response Guidebook. Based on the material's physical and chemical properties, toxicity, or chemical group, a guide has been assigned. For additional technical information, contact one of the emergency response telephone numbers listed under Public Safety Measures.

STCC NUMBER

49 633 07

DESIGNATIONS

STANDARD INDUSTRIAL TRADE CLASSIFICATION NUMBER:52499

MOLECULAR FORMULA

CaCrO4
CaCrO4.2H2O

ERG GUIDE NUMBER

171-SUBSTANCES (LOW TO MODERATE HAZARD)

SYNONYM REFERENCE

(CHRIS , 2002; HSDB , 2002; Lewis, 2000; NTP , 2001; OHM/TADS, 2002)

USES/FORMS/SOURCES

USES

Calcium chromate is used as a corrosion inhibitor, in battery depolarization, as a coating for light metal alloys to enhance heat-resistance, and as a pigment for primer applications (ACGIH, 1996; Budavari, 2000; NTP , 2001; OHM/TADS, 2002).
Calcium chromate is also used as an oxidizing agent and in the manufacture of chromium (Budavari, 2000; Lewis, 1997a; Sittig, 1991a). Exposure to calcium chromate may occur in operations where it is used in the electroplating industry, photochemical processing and industrial waste treatment (OSHA , 1999).

FORMS

Calcium chromate occurs as an odorless bright-yellow powder or crystals (ACGIH, 1996; CHRIS , 2002; NTP , 2001). It normally appears as a dihydrate compound, losing its water at 200 degrees C (392 degrees F) (OSHA , 1999).
Calcium chromate crystals are monoclinic or rhombic (Budavari, 2000).

SOURCES

Calcium chromate is produced commerically through the reaction of calcium chloride with sodium chromate. It does not occur naturally in the environment (HSDB , 2002).
Exposure to calcium chromate occurs most frequently in the machinery (except electrical) industry and transportation and transportation equipment industries (Bingham et al, 2001).

SYNONYM EXPLANATION

Note: The title compound is a hexavalent chromium compound. Please refer to the "CHROMIUM VI" document for more information.

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

Calcium chromate is considered very toxic to humans via all exposure routes. Inhalation exposure may result in headache, throat redness, respiratory tract irritation, nasal damage, cough, sneezing, dyspnea, painful breathing, wheezing, bronchospasm, and chest pain. Nasal damage may include: mucosal irritation, disintegration, ulceration and perforation of the nasal septum. Chronic rhinitis (possibly with a foul nasal discharge) and pharyngitis have also been observed. Chromic acid mist and chromic dusts, in particular, cause severe nose, throat, bronchial and lung irritation.

Dermal contact can produce irritation, deep skin sores ('chrome holes') or penetrating skin ulcers, and sensitizing dermatitis. Eye exposure can result in irritation, conjunctivitis and severe chemical ocular burns. Chromate mist or dust may produce conjunctivitis plus lacrimation and a dark red corneal band.

Ingestion may cause sore throat, dizziness, intense thirst, abdominal or epigastric pain, nausea, vomiting, severe diarrhea and violent gastroenteritis. Throat, stomach and intestinal irritation may lead to tissue damage and gastrointestinal bleeding. Circulatory collapse and chronic nephritis are possible consequences. Shock may result in unconsciousness, oliguria or anuria, and death from renal failure.

Jaundice, kidney damage and lung cancer may result from chronic calcium chromate exposure.

POTENTIAL HEALTH HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Inhalation of material may be harmful.
Contact may cause burns to skin and eyes.
Inhalation of Asbestos dust may have a damaging effect on the lungs.
Fire may produce irritating, corrosive and/or toxic gases.
Some liquids produce vapors that may cause dizziness or suffocation.
Runoff from fire control may cause pollution.

-MEDICAL TREATMENT

LIFE SUPPORT

Support respiratory and cardiovascular function.

SUMMARY

FIRST AID - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (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.
Ensure that medical personnel are aware of the material(s) involved, and take precautions to protect themselves.

FIRST AID

GENERAL -

Move victims of inhalation exposure from the toxic environment and administer 100% humidified supplemental oxygen with assisted ventilation as required. Exposed skin and eyes should be copiously flushed with water. Ingestion may result in significant esophageal or gastrointestinal tract irritation or burns, and EMESIS SHOULD NOT BE INDUCED. Cautious gastric lavage followed by administration of activated charcoal may be of benefit if the patient is seen soon after the exposure.

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.
If bronchospasm and wheezing occur, consider treatment with inhaled sympathomimetic agents.

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 -

Because of the potential for gastrointestinal tract irritation, DO NOT induce emesis.
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).

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

ADULT

Ingestion of between one teaspoonful and one ounce of calcium chromate may be fatal to humans (OHM/TADS, 2002).
Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

MAXIMUM TOLERATED EXPOSURE

ADULT

Exposure to calcium chromate at levels ranging from 0.18 to 1.4 mg/m(3) can cause irritation of the nose and throat within two weeks. Disintegration of nasal tissue, coughing, wheezing, headache, painful breathing and fever can develop after eight weeks of exposure (Sittig, 1991).

Carcinogenicity Ratings for CAS13765-19-0 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): A2 ; Listed as: Calcium chromate, as Cr

A2 :Suspected Human Carcinogen: Human data are accepted as adequate in quality but are conflicting or insufficient to classify the agent as a confirmed human carcinogen; OR, the agent is carcinogenic in experimental animals at dose(s), by route(s) of exposure, at site(s), of histologic type(s), or by mechanism(s) considered relevant to worker exposure. The A2 is used primarily when there is limited evidence of carcinogenicity in humans and sufficient evidence of carcinogenicity in experimental animals with relevance to humans.

EPA (U.S. Environmental Protection Agency, 2011): Not Listed
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): 1 ; Listed as: Calcium chromate

1 : The agent (mixture) is carcinogenic to humans. The exposure circumstance entails exposures that are carcinogenic to humans. This category is used when there is sufficient evidence of carcinogenicity in humans. Exceptionally, an agent (mixture) may be placed in this category when evidence of carcinogenicity in humans is less than sufficient but there is sufficient evidence of carcinogenicity in experimental animals and strong evidence in exposed humans that the agent (mixture) acts through a relevant mechanism of carcinogenicity.

NIOSH (National Institute for Occupational Safety and Health, 2007): Not Listed
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 CAS13765-19-0 (U.S. Environmental Protection Agency, 2011):

Not Listed

TOXICITY VALUES

References: HSDB, 2002 Lewis, 2000 NTP, 2001 OSHA, 1999
- LD50- (ORAL)RAT:
- TD- (INTRAMUSCULAR)RAT:
- TDLo- (INTRAMUSCULAR)RAT:
- TDLo- (INTRAPERITONEAL)RAT:
- TDLo- (INTRATRACHEAL)RAT:

CALCULATIONS

AMBIENT CONVERSIONS

AMBIENT

At 25 degrees C (ACGIH, 1996):
1 ppm = 6.38 mg/m(3); 1 mg/m(3) = 0.16 ppm
1 ppm = 7.85 mg/m(3); 1 mg/m(3) = 0.13 ppm (dihydrate)

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS13765-19-0 (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

Calcium chromate, as Cr

TLV:

TLV-TWA: 0.001 mg/m(3)
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: A2
Codes: Not Listed
Definitions:

A2: Suspected Human Carcinogen: Human data are accepted as adequate in quality but are conflicting or insufficient to classify the agent as a confirmed human carcinogen; OR, the agent is carcinogenic in experimental animals at dose(s), by route(s) of exposure, at site(s), of histologic type(s), or by mechanism(s) considered relevant to worker exposure. The A2 is used primarily when there is limited evidence of carcinogenicity in humans and sufficient evidence of carcinogenicity in experimental animals with relevance to humans.

TLV Basis - Critical Effect(s): Lung cancer
Molecular Weight: 156.09

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 CAS13765-19-0 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS13765-19-0 (National Institute for Occupational Safety and Health, 2007):

Not Listed

OSHA PEL Values for CAS13765-19-0 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS13765-19-0 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS13765-19-0 (U.S. Environmental Protection Agency, 2010):

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

10 (4.54)

Additional Information:
Listed as: Chromic acid H2CrO4, calcium salt
Final Reportable Quantity, in pounds (kilograms):

10 (4.54)

Additional Information:

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS13765-19-0 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS13765-19-0 (U.S. Environmental Protection Agency, 2010b):

Listed as: Calcium chromate
P or U series number: U032
Footnote:
Listed as: Chromic acid H2 CrO4, calcium salt
P or U series number: U032
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 CAS13765-19-0 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS13765-19-0 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS13765-19-0 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS13765-19-0 (EPA, 2005):

Listed as: Chromic acid (H2CrO4), calcium salt (1:1)

SHIPPING REGULATIONS

SURFACE

DOT -- Table of Hazardous Materials and Special Provisions (49 CFR 172.101, 2005):

Not Listed

ICAO International Shipping Name (ICAO, 2002):

Not Listed

LABELS

NFPA

NFPA Hazard Ratings for CAS13765-19-0 (NFPA, 2002):

Not Listed

-HANDLING AND STORAGE

SUMMARY

INDUSTRIAL CHEMICALS

Avoid skin contact with calcium chromate. Protective clothing, gloves, boots, eye/face protection and an approved respirator should be worn at all times when working with calcium chromate (CHRIS , 2002; OHM/TADS, 2002; Sittig, 1991).
Protect against ingestion, inhalation and contact with skin or eyes (OHM/TADS, 2002; NIOSH , 1999).
Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

HANDLING

Protective clothing, gloves, boots, eye/face protection and an approved respirator should be worn at all times when working with calcium chromate (CHRIS , 2002; OHM/TADS, 2002; Sittig, 1991).

A regulated, marked area should be established where calcium chromate is handled, used or stored (Sittig, 1991).

Workers handling calcium chromate should thoroughly wash hands, forearms and face with soap and water before eating or taking medication, using tobacco products, using the toilet or applying cosmetics (OSHA , 1999).

If clothing or shoes become contaminated with calcium chromate, they should be removed immediately (OSHA , 1999).

If calcium chromate contacts the skin, the affected area should be washed immediately with copious soap and water (OSHA , 1999; Sittig, 1991).

If Tyvek-type (DuPont) disposable protective clothing is not worn when working with this chemical, Tyvek-type sleeves should be taped to the gloves for added protection (NTP, 2001).

Contact lenses should not be worn when working with chromates (HSDB , 2002).

STORAGE

CONTAINER

A regulated, marked area should be established where calcium chromate is handled, used or stored (Sittig, 1991).
Protect containers from physical damage (OSHA , 1999).

ROOM/CABINET RECOMMENDATIONS

Store calcium chromate in tightly closed containers at cool, ambient temperatures (CHRIS , 2002; OSHA , 1999).
Keep containers of calcium chromate in a well ventilated area away from food products, heat and water (OHM/TADS, 2002).
Calcium chromate must be stored away from combustible, organic, or other easily oxidized materials (e.g. paper, wood, sulfur, aluminum, hydrazine and plastics) since violent reactions can occur (Sittig, 1991).
A regulated, marked area should be established where calcium chromate is handled, used or stored (Sittig, 1991).
This compound should be stored in a refrigerator (NTP, 2001).

INCOMPATIBILITIES

Calcium chromate is a strong oxidizer. It burns violently when mixed with boron and ignited (Lewis, 2000; OSHA , 1999; Pohanish & Greene, 1997).
This compound reacts with acids and ethanol (NTP, 2001; OSHA , 1999).
Contact with organic materials or reducing agents (e.g. paper, wood, aluminum, plastics or sulfur) may cause the formation of chromium(III) (OSHA , 1999).
Calcium chromate will react explosively when in contact with hydrazine (OSHA , 1999).

-PERSONAL PROTECTION

SUMMARY

RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

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

Protect against both inhalation and skin contact (OHM/TADS, 2002).

Wear chemical protective clothing, gloves, boots and goggles or face-shield when working with this chemical. Avoid breathing dust or vapors (AAR, 2000; (CHRIS , 2002).

If Tyvek-style (DuPont) protective clothing is not worn when working with calcium chromate, taping Tyvek-type sleeves to your gloves is recommended (NTP, 2001).

EYE/FACE PROTECTION

Safety goggles or eye-shield should be worn when working around calcium chromate (AAR, 2000; (CHRIS , 2002; HSDB , 2002; OHM/TADS, 2002).

RESPIRATORY PROTECTION

When working with calcium chromate, wear a NIOSH-approved half-face respirator equipped with an organic vapor/acid gas cartridge and a dust/mist filter (NTP, 2001).

If a respirator with a chemical-specific canister is not worn, a self-contained breathing apparatus should be used (OHM/TADS, 2002).

PROTECTIVE CLOTHING

CHEMICAL PROTECTIVE CLOTHING. Search results for CAS 13765-19-0.

Specific recommendations and test data for this chemical were not found in the available manufacturers' product literature. A complete list of consulted manufacturers and references is presented below.

-PHYSICAL HAZARDS

FIRE HAZARD

SUMMARY

Editor's Note: This material is not listed in the Emergency Response Guidebook. Based on the material's physical and chemical properties, toxicity, or chemical group, a guide has been assigned. For additional technical information, contact one of the emergency response telephone numbers listed under Public Safety Measures.
POTENTIAL FIRE OR EXPLOSION HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Some may burn but none ignite readily.
- Containers may explode when heated.
- Some may be transported hot.
Calcium chromate is not combustible or flammable (OHM/TADS, 2002; OSHA , 1999). It may burn, but does not ignite readily (AAR, 2000; (CHRIS , 2002; Sittig, 1991).
Fires involving calcium chromate may emit toxic chromium fumes (CHRIS , 2002). Wear a self-contained breathing apparatus operated in positive pressure mode to protect against inhalation of chromates while fighting fires involving calcium chromate (HSDB , 2002).
When mixed with boron, calcium chromate forms a violently combustible mixture (Lewis, 2000; Pohanish & Greene, 1997).
Contact with hydrazine causes explosive reactions (OSHA , 1999).

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS13765-19-0 (NFPA, 2002):

Not Listed

INITIATING OR CONTRIBUTING PROPERTIES

When mixed with boron, calcium chromate forms a violently combustible mixture (Lewis, 2000; Pohanish & Greene, 1997).

FIRE CONTROL/EXTINGUISHING AGENTS

SMALL FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Dry chemical, CO2, water spray or regular foam.

LARGE FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Water spray, fog or regular foam.
Move containers from fire area if you can do it without risk.
Do not scatter spilled material with high pressure water streams.
Dike fire-control water for later disposal.

TANK FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

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.

NFPA Extinguishing Methods for CAS13765-19-0 (NFPA, 2002):

Not Listed

Fires involving calcium chromate should be controlled using a dry chemical, carbon dioxide, alcohol foam or Halon extinguisher (NTP, 2001; Sittig, 1991).

COMBUSTION TOXICITY

Fires involving calcium chromate may emit toxic chromium fumes (CHRIS , 2002). Wear a self-contained breathing apparatus operated in positive pressure mode to protect against inhalation of chromates while fighting fires involving calcium chromate (HSDB , 2002).

EXPLOSION HAZARD

Mixing calcium chromate with boron may result in a violent reaction when the mixture is ignited (AAR, 2000).

Contact with organic matter or reducing agents (e.g., paper, wood, aluminum, plastics or sulfur) may result in the formation of chromium(III) or violent reactions (OSHA , 1999; Sittig, 1991).

Contact with hydrazine causes explosive reactions (OSHA , 1999).

DUST/VAPOR HAZARD

Acute Exposure: Exposure to 0.18 to 1.4 mg/m(3) can cause irritation of the nose and throat within two weeks (Sittig, 1991).

Acute Exposure: Calcium chromate causes severe chemical burns when it comes in contact with the eyes (OSHA , 1999).

Chronic Exposure: Disintegration of nasal tissue, coughing, wheezing, headache, painful breathing, and fever can occur within eight weeks of exposure to 0.18 to 1.4 mg/m(3) of calcium chromate (Sittig, 1991).

Chronic inhalation of calcium chromate may cause painless ulceration, bleeding and perforation of the nasal septum, along with putrid nasal discharge (OSHA , 1999; Sittig, 1991). Hyperemia, chronic catarrh, congestion of the larynx, polyps of the upper respiratory tract, chronic inflammation on the lung, emphysema, tracheitis, chronic bronchitis, bronchopneumonia, chronic rhinitis and pharyngitis may also result from prolonged exposure to chromate dust (HSDB , 2002).

Chronic Exposure: Sensitization reactions resulting in dermatitis or asthma can result from inhalation of calcium chromate (OSHA , 1999).

Incapacitating eczematous dermatitis with edema and slow healing ulcerations may result from repeated skin contact with calcium chromate (OSHA , 1999).

Fires involving calcium chromate may emit toxic chromate fumes (CHRIS , 2002).

Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

REACTIVITY HAZARD

When mixed with boron and ignited, calcium chromate burns violently (Pohanish & Greene, 1997).

Contact with hydrazine causes violent reactions (OSHA , 1999).

Contact with organic matter or reducing agents (e.g., paper, wood, aluminum, plastics or sulfur) may result in the formation of chromium(III) or violent reactions (OSHA , 1999; Sittig, 1991).

Calcium chromate reacts slowly with ethanol and acids (NTP, 2001; OSHA , 1999).

EVACUATION PROCEDURES

SUMMARY

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

SPILL - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171(ERG, 2004)

Increase, in the downwind direction, as necessary, the isolation distance of at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids in all directions.

FIRE - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (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 171 (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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Keep unauthorized personnel away.
Stay upwind.

AIHA ERPG Values for CAS13765-19-0 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS13765-19-0 (U.S. Department of Energy, Office of Emergency Management, 2010):

Listed as Calcium chromate
TEEL-0 (units = mg/m3): 0.015
TEEL-1 (units = mg/m3): 0.125
TEEL-2 (units = mg/m3): 0.75
TEEL-3 (units = mg/m3): 45
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 CAS13765-19-0 (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):

Not Listed

NIOSH IDLH Values for CAS13765-19-0 (National Institute for Occupational Safety and Health, 2007):

Not Listed

CONTAINMENT/WASTE TREATMENT OPTIONS

SUMMARY

SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Do not touch or walk through spilled material.
- Stop leak if you can do it without risk.
- Prevent dust cloud.
- Avoid inhalation of asbestos dust.
RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Wear positive pressure self-contained breathing apparatus (SCBA).
- Structural firefighters' protective clothing will only provide limited protection.
Consult all existing state and federal regulations regarding hazardous waste disposal prior to disposing of calcium chromate and/or materials contaminated with it (NTP, 2001).
Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

SMALL LEAK/SPILL

SMALL SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Take up with sand or other non-combustible absorbent material and place into containers for later disposal.
SMALL DRY SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- With clean shovel place material into clean, dry container and cover loosely; move containers from spill area.
Persons not wearing appropriate personal protective clothing and/or equipment should be restricted from areas contaminated by calcium chromate spills (OSHA , 1999).
For solid spills, use a clean shovel to scoop up the spilled material and place it into a clean, dry container. Cover the container and remove it from the spill area. Use a damp mop or vacuum with filter to minimize dust production (OSHA , 1999).
For liquid spills, construct dikes well ahead of the spill area to contain the calcium chromate for later disposal (OSHA , 1999). Dig a pit, lagoon or similar holding area to contain the spilled chemical (AAR, 2000).
Cover any solid spilled materials with a plastic sheet to prevent it dissolving in rain (AAR, 2000).
Dampen solid spill material with 5% acetic acid, then transfer to a suitable container. Wipe up any remaining material with absorbant paper dampened with 5% acetic acid. Place this paper along with any contaminated clothing in an air-tight plastic bag for later disposal (NTP, 2001).
Once spill material has been removed from the area, wash any contaminated surfaces with 5% acetic acid; follow up by washing with soap and water (NTP, 2001).
Wet methods of cleaning up solid calcium chromate spills are preferrable, though vacuum cleaning is an acceptable alternative. Spills should be removed immediately to prevent generation of dusts (HSDB , 2002).

LARGE LEAK/SPILL

LARGE SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Dike far ahead of liquid spill for later disposal.
- Cover powder spill with plastic sheet or tarp to minimize spreading.
- Prevent entry into waterways, sewers, basements or confined areas.

WASTE TREATMENT OPTIONS

CHEMICAL TREATMENT

In case of a water spill, add sodium bisulfite (NaHSO3) then neutralize with agricultural lime (CaO) (crushed limestone (CaCO3) or sodium bicarbonate (NaHCO3) may also be used). Adjust to a neutral pH then use mechanical dredges or lifts to remove immobilized pollutants and precipitates (AAR, 2000).
Dam water to reduce the flow and prevent further dissipation of the chemical. Pump the contaminated water into an appropriate container. Adjust the pH to 2-3 by adding bisulfite until the solution turns green. Then add lime until pH reaches 8-9, and allow precipitate to settle. Alum powder or polymer may be used to improve the settling. Suspended particles may be removed by filtration once precipitate has formed (OHM/TADS, 2002).
Calcium chromate is not accepted at municiple sewage treatment plants (OHM/TADS, 2002).
Materials contaminated with calcium chromate should be encapsulated and buried in a specially designated chemical landfill (OHM/TADS, 2002).
Reduce calcium chromate wastes to chromium(III) and precipitate as trivalent chromium hydroxide. Dispose of compacted sludge in single purpose special waste dumps (Sittig, 1991).
Waste management activities associated with material disposition are unique to individual situations. Proper waste characterization and decisions regarding waste management should be coordinated with the appropriate local, state, or federal authorities to ensure compliance with all applicable rules and regulations.

PHYSICAL TREATMENT

Calcium chromate may be a candidate for high-temperature incineration (>2000 degrees F) (NTP, 2001).
Calcium chromate is a poor candidate for incineration, as is wastewater treatment sludge from production of chrome yellow and orange pigment (HSDB , 2002).

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

Highly alkaline waste material containing mostly calcium chromate from the processing of chromite ore to chromate has been known to cause land and river pollution (HSDB , 2002).

Calcium chromate is a persistant pollutant in water (HSDB , 2002; OHM/TADS, 2002).

Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

ENVIRONMENTAL FATE AND KINETICS

WATER

SURFACE WATER
- Calcium chromate is a persistant pollutant in water (HSDB , 2002; OHM/TADS, 2002).

BIOACCUMULATION

HUMANS

Human fetus tissue had an accumulation factor of 10 when compared with adult levels (HSDB , 2002).

ENVIRONMENTAL TOXICITY

Plants (including those consumed by fish) are very sensitive to low levels of calcium chromate in the water supply (OHM/TADS, 2002).

LC50 for Bluegill Sunfish is 28 ppm for 96 hours. Chronic aquatic toxicity limits are estimated at 0.5 to 1.0 mg/L for other aquatic organisms (OHM/TADS, 2002).

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

156.07 (anhydrous)
192.10 (as dihydrate)

DESCRIPTION/PHYSICAL STATE

Calcium chromate typically occurs in the anhydrous form as odorless, bright yellow powder, monoclinic or rhombic crystals. The hydrate loses its water at 200 degrees C (HSDB, 2005; Budavari, 2000; OSHA , 1999; Sittig, 1991).

It can also occur in hemihydrate, monohydrate and dihydrate forms (HSDB, 2005; Budavari, 2000) .

VAPOR PRESSURE

Data not available (CHRIS , 2002; OSHA , 1999)

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

2.89 (at 20 degrees C; 68 degrees F) (OSHA , 1999)

TEMPERATURE AND/OR PRESSURE NOT LISTED

2.89 (anhydrous) (Lewis, 1997)
>1 (at 20 degrees C) (CHRIS , 2002)
>1 (OHM/TADS, 2002)

DENSITY

TEMPERATURE AND/OR PRESSURE NOT LISTED

2.89 g/mL (anhydrous) (Lewis, 1997; NTP, 2001)

FREEZING/MELTING POINT

FREEZING POINT

Data not available.

MELTING POINT

Loses water of hydration at 200 degrees C (HSDB, 2005; Lewis, 1997; OHM/TADS, 2002)
200 degrees C (dihydrate) (ACGIH, 1996)

BOILING POINT

Not pertient.

FLASH POINT

Not applicable (OSHA , 1999).

AUTOIGNITION TEMPERATURE

Not applicable (OSHA , 1999).

EXPLOSIVE LIMITS

LOWER

Data not available (NTP, 2001).

UPPER

Data not available (NTP, 2001).

SOLUBILITY

IN WATER

<0.1 mg/mL (at 22 degrees C) (NTP, 2001)
Calcium chromate is slightly soluble in water (AAR, 2000; ACGIH, 1996; Budavari, 2000; Lewis, 1997; OSHA , 1999)
163,000 ppm (163 g/L) (at 20 degrees C) (hydrate) (ACGIH, 2001; (HSDB , 2002; OHM/TADS, 2002)
16.3 g/100 mL (at 20 degrees C) (hydrate) (HSDB, 2005)
18.2 g/100 mL (at 45 degrees C) (dihydrate) (HSDB, 2005)
11.600 lb calcium chromate per 100 lb water (at 60 degrees F) (dihydrate) (HSDB, 2005)

IN ORGANIC SOLVENTS

DMSO: <1 mg/mL (at 22 degrees C) (NTP, 2001)
95% Ethanol:

<1 mg/mL (at 22 degrees C) (NTP, 2001)
Slighty soluble (ACGIH, 1996)
Soluble (hydrate) (ACGIH, 1996)

Acetone: <1 mg/mL (at 19.5 degrees C) (NTP, 2001)
Alcohol: Practically insoluble (Budavari, 2000; OSHA , 1999)

OTHER

Dilute acids: Soluble (ACGIH, 1996; Budavari, 2000; Lewis, 1997; NTP, 2001; OSHA , 1999)

OCTANOL/WATER PARTITION COEFFICIENT

Data not available.

HENRY'S CONSTANT

Not applicable.

SPECTRAL CONSTANTS

Data not available.

VISIBLE

Data not available.

Data not available.

MASS

Data not available.

OTHER/PHYSICAL

ODOR THRESHOLD

Data not available.

-REFERENCES

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National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Bis-Chloromethyl Ether (BCME) (Proposed). United States Environmental Protection Agency. Washington, DC. 2006n. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648022db11&disposition=attachment&contentType=pdf. As accessed 2010-08-16.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Boron Tribromide (Proposed). United States Environmental Protection Agency. Washington, DC. 2008a. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=09000064803ae1d3&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Bromine Chloride (Proposed). United States Environmental Protection Agency. Washington, DC. 2007d. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648039732a&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Bromoacetone (Proposed). United States Environmental Protection Agency. Washington, DC. 2008e. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=09000064809187bf&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Calcium Phosphide (Proposed). United States Environmental Protection Agency. Washington, DC. 2005d. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648020c5ed&disposition=attachment&contentType=pdf. As accessed 2010-08-16.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Carbonyl Fluoride (Proposed). United States Environmental Protection Agency. Washington, DC. 2008b. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=09000064803ae328&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Carbonyl Sulfide (Proposed). United States Environmental Protection Agency. Washington, DC. 2007e. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648037ff26&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Chlorobenzene (Proposed). United States Environmental Protection Agency. Washington, DC. 2008c. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=09000064803a52bb&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Cyanogen (Proposed). United States Environmental Protection Agency. Washington, DC. 2008f. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=09000064809187fe&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Dimethyl Phosphite (Proposed). United States Environmental Protection Agency. Washington, DC. 2009. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=0900006480a7cbf3&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Diphenylchloroarsine (Proposed). United States Environmental Protection Agency. Washington, DC. 2007l. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648020fd29&disposition=attachment&contentType=pdf. As accessed 2010-08-16.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Ethyl Isocyanate (Proposed). United States Environmental Protection Agency. Washington, DC. 2008h. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648091884e&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Ethyl Phosphorodichloridate (Proposed). United States Environmental Protection Agency. Washington, DC. 2008i. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=0900006480920347&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Ethylbenzene (Proposed). United States Environmental Protection Agency. Washington, DC. 2008g. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=09000064809203e7&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Ethyldichloroarsine (Proposed). United States Environmental Protection Agency. Washington, DC. 2007j. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648020fd29&disposition=attachment&contentType=pdf. As accessed 2010-08-16.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Germane (Proposed). United States Environmental Protection Agency. Washington, DC. 2008j. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=0900006480963906&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Hexafluoropropylene (Proposed). United States Environmental Protection Agency. Washington, DC. 2006. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=09000064801ea1f5&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Ketene (Proposed). United States Environmental Protection Agency. Washington, DC. 2007. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648020ee7c&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Magnesium Aluminum Phosphide (Proposed). United States Environmental Protection Agency. Washington, DC. 2005h. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648020c5ed&disposition=attachment&contentType=pdf. As accessed 2010-08-16.

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National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Mercury Vapor (Proposed). United States Environmental Protection Agency. Washington, DC. 2009b. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=0900006480a8a087&disposition=attachment&contentType=pdf. As accessed 2010-08-12.

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Methyl Isothiocyanate (Proposed). United States Environmental Protection Agency. Washington, DC. 2008k. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=0900006480963a03&disposition=attachment&contentType=pdf. As accessed 2010-08-15.

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CALCIUM CHROMATE

Classification | Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents