PIPERAZINE

Piperazine is a heterocyclic secondary amine that is a strong organic base (Grant, 1986). It has been used as an anthelmintic, as a corrosion inhibitor, insecticide, and accelerator for curing polychloroprene (Budavari, 1989; Sax & Lewis, 1987).
Piperazine is an anthelmintic agent effective in the treatment of various parasitic infections. It has been used to treat ascariasis caused by intestinal nematodes Ascaris lumbricoides (roundworm) and enterobiasis (oxyuriasis) caused by Enterobius vermicularis (pinworm). Piperazine was especially useful in the treatment of partial intestinal obstruction caused by Ascaris worms, which is a condition primarily seen in children (Gilman et al, 1990; Rakel, 1992; Blumenthal, 1988; Brown & Neva, 1983; Katz, 1986; Plorde & Ramsey, 1991; Markell et al, 1992; Warren & Mahmoud, 1977). Piperazine dihydrochloride is also available for veterinary use.
For information on recreational drugs, n-benzylpiperazine (BZP) and trifluoromethylphenylpiperazine (TFMPP), refer to managements N-BENZYLPIPERAZINE and HALLUCINOGENIC AMPHETAMINES, respectively.

FORMS

Piperazine citrate tablets (equivalent to 250 mg piperazine hexahydrate)
Piperazine citrate syrup (equivalent to 500 mg piperazine hexahydrate per 5 mL)
Also available as a powder, granules, liquid, and tablets for veterinary use (JEF Reynolds , 1989).
The primary routes of exposure (other than medicinal) are skin or eye contact as well as inhalation of vapors (or dusts of salts). The salts are less hazardous than anhydrous or hexahydrate forms of piperazine (Clayton & Clayton, 1981)

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

USES: Piperazine is a heterocyclic secondary amine that is a strong organic base. It has been used as an anthelmintic agent to treat ascariasis caused by intestinal nematodes Ascaris lumbricoides (roundworm) and enterobiasis (oxyuriasis) caused by Enterobius vermicularis (pinworm). Piperazine dihydrochloride is available for veterinary use. It has also been used as a corrosion inhibitor, insecticide, and accelerator for curing polychloroprene. Piperazine is no longer manufactured in the United States. For information on recreational drugs containing, n-benzylpiperazine (BZP) and trifluoromethylphenylpiperazine (TFMPP), refer to managements N-BENZYLPIPERAZINE and HALLUCINOGENIC AMPHETAMINES, respectively.

PHARMACOLOGY: Piperazine salts have shown activity against the human pinworm (Enterobius vermicularis) and against the roundworm (Ascaris lumbricoides). Piperazine blocks the response of ascaris smooth muscle to acetylcholine. This produces paralysis of the muscle and expulsion via peristalsis.

TOXICOLOGY: In mice, piperazine produces sedation in low doses, muscular paralysis in high doses and increases hexobarbital sleep time. Urinary excretion is the main route of elimination and thus increased toxicity is seen in patients with decreased renal function.

EPIDEMIOLOGY: Overdose is rare.

WITH POISONING/EXPOSURE

Piperazine is moderately toxic by ingestion, skin contact, intravenous and subcutaneous routes; it is mildly toxic by inhalation. Overdose effects are anticipated to be an extension of adverse effects following therapeutic doses. A child developed transient neurologic dysfunction (drowsiness, refusal to eat, unsteadiness, and frequent falling episodes) after ingesting 300 mg/kg/day (usual recommended dose: 65 mg/kg/day) of piperazine hydrochloride over 2 days for the treatment of anal pruritus. Piperazine has been associated with the occurrence of asthma in workers handling piperazine. In studies, exposed workers had a higher incidence of airway symptoms (dyspnea, wheezing, severe hacking cough) than the unexposed group.

WITH THERAPEUTIC USE

Nausea, vomiting, abdominal pain, diarrhea, urticaria, confusion, euphoria, headache, muscular weakness, ataxia, lethargy, nystagmus, visual disturbances, vertigo, paresthesias, myoclonic contractions, tremor, choreiform movements, contact dermatitis, acute allergic reactions, seizures, and coma have been reported with therapeutic use. A confusional state, characterized by a sense of detachment, euphoria, hallucinations, and an inability to think clearly, has also been reported.

POTENTIAL HEALTH HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death.
Contact with molten substance may cause severe burns to skin and eyes.
Avoid any skin contact.
Effects of contact or inhalation may be delayed.
Fire may produce irritating, corrosive and/or toxic gases.
Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

-FIRST AID

FIRST AID AND PREHOSPITAL TREATMENT

Prehospital gastrointestinal decontamination is generally not recommended because of the potential for CNS depression or persistent seizures and subsequent aspiration.

-MEDICAL TREATMENT

LIFE SUPPORT

Support respiratory and cardiovascular function.

SUMMARY

FIRST AID - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Move victim to fresh air.
Call 911 or emergency medical service.
Give artificial respiration if victim is not breathing.
Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
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.
For minor skin contact, avoid spreading material on unaffected skin.
Keep victim warm and quiet.
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

Prehospital gastrointestinal decontamination is generally not recommended because of the potential for CNS depression or persistent seizures and subsequent aspiration.

-RANGE OF TOXICITY

MINIMUM LETHAL EXPOSURE

CASE REPORTS

PEDIATRIC

An 11-year-old died after experiencing status epilepticus for 6 days following therapeutic doses of piperazine (Schuch et al, 1966).
An 8-year-old uremic patient, who was given 86.7 mg/kg/day of piperazine for 3 days, died after his mental status had improved and myoclonic jerks had subsided, all other cases recovered completely within a few days after the drug was discontinued with symptomatic and supportive care (Miller & Carpenter, 1967).

MAXIMUM TOLERATED EXPOSURE

CASE REPORTS

Toxic effects have been noted at doses as low as 30 mg/kg/day in a patient with renal failure (Combes et al, 1956) and 50 to 75 mg/kg/day in patients with normal renal function.
Recovery has been reported following an ingestion of 11.6 g (Slaughter, 1896).
Transient neurologic dysfunction was noted in a 2-year-old female receiving an estimated dose of 300 mg/kg/day for 2 days. Neurologic dysfunction resolved within 72 hours of admission (Yohai & Barnett, 1989).

Carcinogenicity Ratings for CAS110-85-0 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): A4 ; Listed as: Piperazine

A4 :Not Classifiable as a Human Carcinogen: Agents which cause concern that they could be carcinogenic for humans but which cannot be assessed conclusively because of a lack of data. In vitro or animal studies do not provide indications of carcinogenicity which are sufficient to classify the agent into one of the other categories.

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): Not Listed
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 CAS110-85-0 (U.S. Environmental Protection Agency, 2011):

Not Listed

TOXICITY VALUES

LC50- (INHALATION)MOUSE:
- 5400 mg/m(3) for 2H (RTECS , 1992a; Sax & Lewis, 1989a)
LC50- (INHALATION)RAT:
- 5400 mg/m(3) for 2H (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (INTRAPERITONEAL)MOUSE:
- 1900 mg/kg (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (INTRAVENOUS)MOUSE:
- 1180 mg/kg (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (ORAL)MOUSE:
- 600 mg/kg (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (SUBCUTANEOUS)MOUSE:
- 1100 mg/kg (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (SKIN)RABBIT:
- 4 g/kg (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (INTRAVENOUS)RAT:
- 1340 mg/kg (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (ORAL)RAT:
- 1900 mg/kg (RTECS , 1992a; Sax & Lewis, 1989a)
LD50- (SUBCUTANEOUS)RAT:
- 3700 mg/kg (RTECS , 1992a; Sax & Lewis, 1989a)

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS110-85-0 (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.

Notice of Intended Changes

Piperazine

TLV:

TLV-TWA: 0.1 mg/m(3)
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: A4
Codes: IFV, SEN
Definitions:

A4: Not Classifiable as a Human Carcinogen: Agents which cause concern that they could be carcinogenic for humans but which cannot be assessed conclusively because of a lack of data. In vitro or animal studies do not provide indications of carcinogenicity which are sufficient to classify the agent into one of the other categories.
IFV: Inhalable fraction and vapor.
SEN: The designation SEN refers to the potential for an agent to produce sensitization, as confirmed by human or animal data. The notation does not imply that this is the critical effect or that this is the sole basis for the TLV. Although, for those TLVs that are based on sensitization, the TLV is meant to protect workers from induction of this effect, but cannot protect workers who have already become sensitized. The notation should be used to assist in identifying sensitization hazards and reducing respiratory, dermal, and conjunctival exposures to sensitizing agents in the workplace. Please see "Definitions and Notations" (in TLV booklet) for full definition.

TLV Basis - Critical Effect(s): Resp sens; asthma; liver and kidney dam
Molecular Weight: 86.14

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 CAS110-85-0 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS110-85-0 (National Institute for Occupational Safety and Health, 2007):

Not Listed

OSHA PEL Values for CAS110-85-0 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS110-85-0 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS110-85-0 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS110-85-0 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS110-85-0 (U.S. Environmental Protection Agency, 2010b):

Not Listed
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 CAS110-85-0 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS110-85-0 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS110-85-0 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS110-85-0 (EPA, 2005):

Listed as: Piperazine

SHIPPING REGULATIONS

SURFACE

DOT -- Table of Hazardous Materials and Special Provisions for UN/NA Number 2579 (49 CFR 172.101, 2005):

Hazardous materials descriptions and proper shipping name: Piperazine

Symbol(s): Not Listed
Hazard class or Division: 8

8: Corrosive material. See 49 CFR section 173.136 for definitions.

Identification Number: UN2579
Packing Group: III

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

Label(s) required (if not excepted): 8

8: Corrosive.

Special Provisions: IB8, IP3, T1, TP33

IB8: Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2, 31HZ1 and 31HZ2); Fiberboard (11G); Wooden (11C, 11D and 11F); Flexible (13H1, 13H2, 13H3, 13H4, 13H5, 13L1, 13L2, 13L3, 13L4, 13M1 or 13M2).
IP3: Flexible IBCs must be sift-proof and water-resistant or must be fitted with a sift-proof and water-resistant liner.
T1: 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)(2).
TP33: The portable tank instruction assigned for this substance applies for granular and powdered solids and for solids which are filled and discharged at temperatures above their melting point which are cooled and transported as a solid mass. Solid substances transported or offered for transport above their melting point are authorized for transportation in portable tanks conforming to the provisions of portable tank instruction T4 for solid substances of packing group III or T7 for solid substances of packing group II, unless a tank with more stringent requirements for minimum shell thickness, maximum allowable working pressure, pressure-relief devices or bottom outlets are assigned in which case the more stringent tank instruction and special provisions shall apply. Filling limits must be in accordance with portable tank special provision TP3. Solids meeting the defnintion of an elevated temperature material must be transported in accordance with the applicable requirements of this subchapter.

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

Exceptions: 154
Non-bulk packaging: 213
Bulk packaging: 240

Quantity Limitations:

Passenger aircraft or railcar: 25 kg
Cargo aircraft only: 100 kg

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: 12, 52

12: Keep as cool as reasonably practicable.
52: Stow "separated from" acids.

ICAO International Shipping Name for UN2579 (ICAO, 2002):

Proper Shipping Name: Piperazine
UN Number: 2579

LABELS

NFPA

NFPA Hazard Ratings for CAS110-85-0 (NFPA, 2002):

Listed as: Piperazine
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): 2

(2) Combustible. Materials that must be moderately heated before ignition can occur. Including liquids having a flash point above 100 degrees F, and solids that readily give off flammable vapors.

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

STORAGE

CONTAINER

Keep containers tightly closed and protect from light (Budavari, 1989).

ROOM/CABINET RECOMMENDATIONS

Storage temperature: ambient (CHRIS , 1992)

-PERSONAL PROTECTION

SUMMARY

RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Wear positive pressure self-contained breathing apparatus (SCBA).
Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection.
Structural firefighters' protective clothing provides limited protection. fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.

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 110-85-0.

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)

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)

FOOTWEAR

Specific recommendations and test data for this product type were not found in the available manufacturers' product literature.

GLOVES

Specific recommendations and test data for this product type were not found in the available manufacturers' product literature.

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

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

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 153 (ERG, 2004)
- Combustible material: may burn but does not ignite readily.
- When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards.
- Those substances designated with a "P" may polymerize explosively when heated or involved in a fire.
- Contact with metals may evolve flammable hydrogen gas.
- Containers may explode when heated.
- Runoff may pollute waterways.
- Substance may be transported in a molten form.

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS110-85-0 (NFPA, 2002):

Listed as: Piperazine
Flammability Rating: 2

(2) Combustible. Materials that must be moderately heated before ignition can occur. Including liquids having a flash point above 100 degrees F, and solids that readily give off flammable vapors.

FIRE CONTROL/EXTINGUISHING AGENTS

SMALL FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Dry chemical, CO2 or water spray.

LARGE FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Dry chemical, CO2, alcohol-resistant foam or water spray.
Move containers from fire area if you can do it without risk.
Dike fire control water for later disposal; do not scatter the material.

TANK OR CAR/TRAILER LOAD FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Fight fire from maximum distance or use unmanned hose holders or monitor nozzles.
Do not get water inside containers.
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 CAS110-85-0 (NFPA, 2002):

Listed as: Piperazine
Extinguishing Method(s): 5

5: Flammable liquid fires can be extinguished using carbon dioxide, dry chemical, foam, and vaporizing liquid extinguishers, as long as the fires are small to moderate in size and the flammable liquid reservoir is shallow. Use of foam to form a blanket over a flammable liquid is not effective when the liquid is water-soluble. Certain alcohol resistant foams are effective extinguishing agents for polar, non-polar, and water-soluble liquid fires. These foams are preferred for fighting flammable liquid fires except those that involve water reactive flammable liquids.

COMBUSTION TOXICITY

When heated to decomposition, piperazine emits highly toxic fumes of oxides of nitrogen (Sax & Lewis, 1989).

EXPLOSION HAZARD

Piperazine explodes on contact with dicyanofurazan (Sax & Lewis, 1989).

DUST/VAPOR HAZARD

When heated to decomposition, piperazine emits highly toxic fumes of oxides of nitrogen (Sax & Lewis, 1989).

REACTIVITY HAZARD

Piperazine can react vigorously with oxidizing materials (Sax & Lewis, 1989).

Piperazine explodes on contact with dicyanofurazan (Sax & Lewis, 1989).

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 153 (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 153 (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 153 (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.
Keep out of low areas.
Ventilate enclosed areas.

AIHA ERPG Values for CAS110-85-0 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS110-85-0 (U.S. Department of Energy, Office of Emergency Management, 2010):

Listed as Piperazine
TEEL-0 (units = mg/m3): 2
TEEL-1 (units = mg/m3): 6
TEEL-2 (units = mg/m3): 40
TEEL-3 (units = mg/m3): 500
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 CAS110-85-0 (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 CAS110-85-0 (National Institute for Occupational Safety and Health, 2007):

Not Listed

CONTAINMENT/WASTE TREATMENT OPTIONS

SUMMARY

SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)
- ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area).
- Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
- Stop leak if you can do it without risk.
- Prevent entry into waterways, sewers, basements or confined areas.
- Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.
- DO NOT GET WATER INSIDE CONTAINERS.
RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)
- Wear positive pressure self-contained breathing apparatus (SCBA).
- Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection.
- Structural firefighters' protective clothing provides limited protection. fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.
No information on disposal guidelines for piperazine was found in available references at the time of this review.

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

No information on the pollution hazard of piperazine was found in available references at the time of this review.

ENVIRONMENTAL FATE AND KINETICS

OTHER

OTHER
- Food chain concentration potential: None (CHRIS , 1992)

ENVIRONMENTAL TOXICITY

No information on the environmental toxicity of piperazine was found in available references at the time of this review.

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

86.14 (Budavari, 1989)

DESCRIPTION/PHYSICAL STATE

PURE

Piperazine has been described as leaflets from alcohol; colorless, deliquescent, transparent, needle-like or rhombic crystals with an ammoniacal or mild fish odor, which absorb carbon dioxide from the air (Budavari, 1989; Sax & Lewis, 1989; CHRIS , 1992) HSDB, 1992).
It has been described as having a salty taste (Budavari, 1989) Windholz, 1983).

HEXAHYDRATE: has been described as crystals from water (containing 44.34% anhydrous piperazine); the piperazine of commerce is usually this hydrate (Budavari, 1989)

PHOSPHATE: has been described as minute crystals (Budavari, 1989)

PURE

strong base (Budavari, 1989)
10.8-11.8 (10% aqueous solution)(Budavari, 1989)

HEXAHYDRATE: 10.8-11.8 (10% aqueous solution) (Budavari, 1989)

PHOSPHATE: 6.5 (saturated aqueous solutuion) (Budavari, 1989)

VAPOR PRESSURE

< 1.0 mmHg (20 degrees C) (Clayton & Clayton, 1981)

FREEZING/MELTING POINT

MELTING POINT

MELTING POINT

PURE: 106 degrees C (Budavari, 1989)
HEXAHYDRATE: 44 degrees C (Budavari, 1989)

BOILING POINT

PURE: 146 degrees C (at 760 mmHg) (Budavari, 1989)

HEXAHYDRATE: 125-130 degrees C (Budavari, 1989)

FLASH POINT

178 degrees F (open cup) (NFPA, 1991)

ANHYDROUS: 229 degrees F (Clayton & Clayton, 1981)

HEXAHYDRATE: 190 degrees F (open cup) (Sax & Lewis, 1989; Clayton & Clayton, 1981)

EXPLOSIVE LIMITS

LOWER

- No information found at the time of this review.

UPPER

- No information found at the time of this review.

SOLUBILITY

IN WATER

Pure: freely soluble in water (Budavari, 1989)
Hexahydrate: freely soluble in water (Budavari, 1989)
Phosphate: very slightly soluble in water (Budavari, 1989)

IN ORGANIC SOLVENTS

Pure: freely soluble in glycerol, and glycols; insoluble in ether (Budavari, 1989)
Pure: One g/2 mL of 95% alcohol (Budavari, 1989)
Hexahydrate: soluble in alcohol (about 1:2); practically insoluble in ether (Budavari, 1989)

OTHER/PHYSICAL

ODOR THRESHOLD

Currently not available (CHRIS , 2002)

DISSOCIATION CONSTANT

pKa = 4.19 (Budavari, 1989)

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Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents