1,1,1,2-TETRACHLOROETHANE
HAZARDTEXT ®
Information to help in the initial response for evaluating chemical incidents
-IDENTIFICATION
SYNONYMS
ETHANE, 1,1,1,2-TETRACHLORO- 1,1,1,2-TETRACHLOROETHANE
IDENTIFIERS
USES/FORMS/SOURCES
1,1,1,2-Tetrachloroethane is used as a solvent and in the manufacture of such solvents as trichloroethylene and tetrachloroethylene. It also is used as a laboratory reagent, as a chemical intermediate for chlorocarbon solvents, and in the production of herbicides, insecticides, soil fumigants, bleaches, paints, and varnishes (HSDB , 1999). The compound is not manufactured on an industrial scale and is not used commercially in the United States. It is an undesired byproduct derived primarily from the production of other chloroethanes (Howard, 1990; HSDB , 1999).
-CLINICAL EFFECTS
GENERAL CLINICAL EFFECTS
- 1,1,1,2-Tetrachloroethane may be irritating to the eyes, skin, and mucous membranes of the respiratory tract. Signs and symptoms may include gastrointestinal disturbances, liver changes, irregular respirations, muscular incoordination, and CNS depression.
- POTENTIAL HEALTH HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (ERG, 2004)
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. 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.
-MEDICAL TREATMENT
LIFE SUPPORT
- Support respiratory and cardiovascular function.
SUMMARY
- FIRST AID - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (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 If exposure occurs, follow these first aid measures (National Institute for Occupational Safety and Health, 2007): EYE EXPOSURE - Immediately wash the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Contact lenses should not be worn when working with this chemical. DERMAL EXPOSURE - Immediately wash the contaminated skin with soap and water. If this chemical penetrates the clothing, immediately remove the clothing, wash the skin with soap and water, and get medical attention promptly. INHALATION EXPOSURE - Move the exposed person to fresh air at once. If breathing has stopped, perform artifical respiration. Keep the affected person warm and at rest. Get medical attention as soon as possible. ORAL EXPOSURE - If this chemical has been swallowed, get medical attention immediately.
TARGET ORGANS - Eyes, skin, CNS, and liver.
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. Because of the potential for rapid onset of CNS depression or seizures with possible aspiration of gastric contents, 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). Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.
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 and CNS depression, DO NOT induce emesis. Significant esophageal or gastrointestinal tract irritation or burns may occur following ingestion. The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. GASTRIC LAVAGE: Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Protect airway by placement in the head down left lateral decubitus position or by endotracheal intubation. Control any seizures first. 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. Observe patients with ingestion carefully for the possible development of esophageal or gastrointestinal tract irritation or burns. If signs or symptoms of esophageal irritation or burns are present, consider endoscopy to determine the extent of injury.
-RANGE OF TOXICITY
MAXIMUM TOLERATED EXPOSURE
- Carcinogenicity Ratings for CAS630-20-6 :
ACGIH (American Conference of Governmental Industrial Hygienists, 2010): Not Listed EPA (U.S. Environmental Protection Agency, 2011): C ; Listed as: 1,1,1,2-Tetrachloroethane 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): 3 ; Listed as: 1,1,1,2-Tetrachloroethane 3 : The agent (mixture or exposure circumstance) is not classifiable as to its carcinogenicity to humans. This category is used most commonly for agents, mixtures and exposure circumstances for which the evidence of carcinogenicity is inadequate in humans and inadequate or limited in experimental animals. Exceptionally, agents (mixtures) for which the evidence of carcinogenicity is inadequate in humans but sufficient in experimental animals may be placed in this category when there is strong evidence that the mechanism of carcinogenicity in experimental animals does not operate in humans. Agents, mixtures and exposure circumstances that do not fall into any other group are also placed in this category.
NIOSH (National Institute for Occupational Safety and Health, 2007): Not Listed ; Listed as: 1,1,1,2-Tetrachloroethane 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 Risk Assessment Values for CAS630-20-6 (U.S. Environmental Protection Agency, 2011):
Oral: Inhalation: Drinking Water:
-STANDARDS AND LABELS
WORKPLACE STANDARDS
- ACGIH TLV Values for CAS630-20-6 (American Conference of Governmental Industrial Hygienists, 2010):
- AIHA WEEL Values for CAS630-20-6 (AIHA, 2006):
- NIOSH REL and IDLH Values for CAS630-20-6 (National Institute for Occupational Safety and Health, 2007):
- OSHA PEL Values for CAS630-20-6 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):
- OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS630-20-6 (U.S. Occupational Safety and Health Administration, 2010):
ENVIRONMENTAL STANDARDS
- EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS630-20-6 (U.S. Environmental Protection Agency, 2010):
Listed as: 1,1,1,2-Tetrachloroethane Final Reportable Quantity, in pounds (kilograms): Additional Information: Listed as: Ethane, 1,1,1,2-tetrachloro- Final Reportable Quantity, in pounds (kilograms): Additional Information:
- EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS630-20-6 (U.S. Environmental Protection Agency, 2010):
- EPA RCRA Hazardous Waste Number for CAS630-20-6 (U.S. Environmental Protection Agency, 2010b):
Listed as: Ethane, 1,1,1,2-tetrachloro- P or U series number: U208 Footnote: Listed as: 1,1,1,2-Tetrachloroethane P or U series number: U208 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 CAS630-20-6 (U.S. Environmental Protection Agency, 2010):
- EPA SARA Title III, Community Right-to-Know for CAS630-20-6 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):
Listed as: 1,1,1,2-Tetrachloroethane Effective Date for Reporting Under 40 CFR 372.30: 1/1/94 Lower Thresholds for Chemicals of Special Concern under 40 CFR 372.28:
- DOT List of Marine Pollutants for CAS630-20-6 (49 CFR 172.101 - App. B, 2005):
- EPA TSCA Inventory for CAS630-20-6 (EPA, 2005):
Listed as: Ethane, 1,1,1,2-tetrachloro-
SHIPPING REGULATIONS
- DOT -- Table of Hazardous Materials and Special Provisions for UN/NA Number 1702 (49 CFR 172.101, 2005):
- ICAO International Shipping Name for UN1702 (ICAO, 2002):
LABELS
- NFPA Hazard Ratings for CAS630-20-6 (NFPA, 2002):
-HANDLING AND STORAGE
HANDLING
- Use caution when handling 1,1,1,2-tetrachloroethane. Because of the structural likeness to carcinogenic chloroethanes, exposures to the compound should be minimized (HSDB , 1999).
STORAGE
Keep separate from dinitrogen tetraoxide, 2,4-dinitrophenyl disulfide, potassium, potassium hydroxide, nitrogen tetroxide, sodium, and sodium potassium alloy (Lewis, 1996; NIOSH , 1999).
-PERSONAL PROTECTION
SUMMARY
- RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (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 in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.
EYE/FACE PROTECTION
- To prevent eye contact, wear appropriate eye protection (NIOSH , 1999).
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 630-20-6.
-PHYSICAL HAZARDS
FIRE HAZARD
- FLAMMABILITY CLASSIFICATION
- NFPA Flammability Rating for CAS630-20-6 (NFPA, 2002):
- FIRE CONTROL/EXTINGUISHING AGENTS
- SMALL FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (ERG, 2004)
- LARGE FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (ERG, 2004)
Water spray, fog or regular foam. Move containers from fire area if you can do it without risk. Dike fire control water for later disposal; do not scatter the material. Use water spray or fog; do not use straight streams.
- TANK OR CAR/TRAILER LOAD FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (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. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
- NFPA Extinguishing Methods for CAS630-20-6 (NFPA, 2002):
EXPLOSION HAZARD
- 1,1,1,2-Tetrachloroethane is incompatible with or may react with potassium, sodium, dinitrogen tetraoxide, potassium hydroxide, nitrogen tetroxide, sodium potassium alloy, and 2,4-dinitrophenyl disulfide (NIOSH , 1999). As the terms "incompatibilities" and "reactivities" were used in the literature, it is not clear if explosions are a possible result.
DUST/VAPOR HAZARD
- Inhalation of the compound is an exposure route and possible health hazard (NIOSH , 1999).
REACTIVITY HAZARD
- 1,1,1,2-Tetrachloroethane reacts with or is incompatible with potassium, sodium, dinitrogen tetraoxide, potassium hydroxide, nitrogen tetroxide, sodium potassium alloy, and 2,4-dinitrophenyl disulfide (NIOSH , 1999).
- 1,1,1,2-Tetrachloroethane in contact with incandescent materials, flames, or extremely hot metal surfaces decomposes to form hydrochloric acid, carbon dioxide, and carbon monoxide (HSDB , 1999).
- The compound releases toxic vapors of hydrogen chloride when heated to decomposition (Lewis, 1996).
EVACUATION PROCEDURES
- 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 151 (ERG, 2004)
Increase, in the downwind direction, as necessary, the isolation distance of at least 25 to 50 meters (80 to 160 feet) in all directions.
- FIRE - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (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 151 (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: UNITED STATES:
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.
- AIHA ERPG Values for CAS630-20-6 (AIHA, 2006):
- DOE TEEL Values for CAS630-20-6 (U.S. Department of Energy, Office of Emergency Management, 2010):
Listed as Tetrachloroethane 1,1,1,2- TEEL-0 (units = ppm): 3 TEEL-1 (units = ppm): 7.5 TEEL-2 (units = ppm): 30 TEEL-3 (units = ppm): 30 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 CAS630-20-6 (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; 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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):
- NIOSH IDLH Values for CAS630-20-6 (National Institute for Occupational Safety and Health, 2007):
CONTAINMENT/WASTE TREATMENT OPTIONS
SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 151 (ERG, 2004) 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. Cover with plastic sheet to prevent spreading. 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 151 (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 in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.
"At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices." (HSDB , 1999) The compound may be disposed using fluidized bed incineration at a 450 to 980 degrees C temperature range and residence times of seconds for liquids and gases, and longer for solids (HSDB , 1999). Rotary kiln incineration may also be considered at 820 to 1600 degrees C and residence times of hours for solids and seconds for liquids and gases (HSDB , 1999). Liquid injection incineration is another potential disposal method. At temperatures between 650 and 1600 degrees C, residence times are 0.1 to 2 seconds (HSDB , 1999). Incineration generally works best when 1,1,1,2-tetrachloroethane is mixed with another combustible fuel. (Note that only complete combustion will prevent phosgene formation.) Use an acid scrubber to remove halo acids produced during incineration (HSDB , 1999). Evaporate the substance in small amounts only. Do not discharge it to sewers (HSDB , 1999). 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.
-ENVIRONMENTAL HAZARD MANAGEMENT
POLLUTION HAZARD
- 1,1,1,2-Tetrachloroethane is not manufactured in the United States and has no commercial applications. However, manufacturing of chlorinated ethanes can produce the compound incidentally, which then can be emitted as air emissions or wastewater into the environment (Howard, 1990).
ENVIRONMENTAL FATE AND KINETICS
An estimated half-life of 550 days indicates that the compound is very stable in the atmosphere, though it is subject to washout by rain. 1,1,1,2-Tetrachloroethane will disperse over long distances and will diffuse slowly into the stratosphere, where it will degrade quickly (Howard, 1990). Half-lives: High: 22,361 hours (2.6 years); Low: 2236 hours (93 days); Comment: "Scientific judgement based upon estimated photooxidation half-life in air" (Howard, 1991). Photooxidation Half-life: High 22,361 hours (2.6 years); Low: 2236 hours (93 days); Comment: "Scientific judgement based upon an estimated rate constant for vapor phase reaction with hydroxyl radicals in air" (Howard, 1991).
SURFACE WATER 1,1,1,2-Tetrachloroethane is highly volatile when released to water. (Half-life from a model river was estimated at 4.2 hours.) The compound is not expected to adsorb to sediment (Howard, 1990). Surface Water Half-lives: High: 1604 hours (66.8 days); Low: 16 hours; Comment: "Scientific judgement based upon hydrolysis half-lives at pH 7 and 9" (Howard, 1991). Groundwater Half-lives: High: 1604 hours (66.8 days); Low: 16 hours; Comment: "Scientific judgement based upon hydrolysis half-lives at pH 7 and 9" (Howard, 1991). First Order Hydrolysis Half-life: 1604 hours (66.8 days); Comment: "Based upon rate constant (kB = 1.2 M(-1) s(-1)) for base reaction at 25 degrees C and pH of 7" (Howard, 1991).
TERRESTRIAL When released on a soil surface, it is expected that 1,1,1,2-tetrachloroethane will leach into the soil and volatilize from its surface. The compound will be moderately mobile within the soil and may leach into groundwater (Howard, 1990). Half-lives: High: 1604 hours (66.8 days); Low: 16 hours; Comment: "Scientific judgement based upon hydrolysis half-lives at pH 7 and 9" (Howard, 1991).
ABIOTIC DEGRADATION
- Hydrolysis is not a significant degradation process, with a half-life exceeding 50 years (Howard, 1990)
- The reaction rate of the compound with photochemically produced hydroxyl radicals is estimated at 2.9x10(-14) cm(3) molecule-sec (550-day half-life). When irradiated in the presence of chlorine, degradation is quick, with 20% removal in 3 minutes (Howard, 1990).
BIODEGRADATION
- AQUEOUS BIODEGRADATION (UNACCLIMATED)
Aerobic Half-life: High: 672 hours (4 weeks); Low: 4320 hours (6 months); Comment: "Scientific judgement based upon acclimated river die-away rate data for 1,1,2,2-tetrachloroethane; and unacclimated sea water, and sub-soil grab sample data from a groundwater aquifer for 1,1,1-trichloroethane" (Howard, 1991). Anaerobic Half-life: High: 2688 hours (16 weeks); Low: 17,280 hours (6 months); Comment: "Scientific judgement based upon aerobic biodegradation half-life" (Howard, 1991).
BIOACCUMULATION
Based on water solubility and estimates from similar compounds, a BCF of 12 is expected for 1,1,1,2-tetrachloroethane when using a recommended regression equation (Howard, 1990).
ENVIRONMENTAL TOXICITY
- Ecotoxicity Values (HSDB , 1999)
-PHYSICAL/CHEMICAL PROPERTIES
MOLECULAR WEIGHT
DESCRIPTION/PHYSICAL STATE
- 1,1,1,2-Tetrachloroethane is described as a colorless to yellowish-red, heavy liquid (HSDB , 1999).
VAPOR PRESSURE
- 14 mmHg (at 25 degrees C) (HSDB , 1999)
- 12.03 mmHg (at 25 degrees C) (calculated from experimentally derived coefficients) (HSDB , 1999)
SPECIFIC GRAVITY
- OTHER TEMPERATURE AND/OR PRESSURE
DENSITY
- TEMPERATURE AND/OR PRESSURE NOT LISTED
FREEZING/MELTING POINT
BOILING POINT
- 130.5 degrees C (at 760 mmHg) (Howard, 1990; HSDB , 1999)
FLASH POINT
EXPLOSIVE LIMITS
SOLUBILITY
0.1% (NIOSH , 1999) 1.1x10(3) mg/L (at 25 degrees C) (HSDB , 1999) 1100 mg/L (at 25 degrees C) (Howard, 1990) 0.056 g water/100 g 1,1,1,2-tetrachloroethane (at 20 degrees C) (HSDB , 1999)
1,1,1,2-Tetrachloroethane is soluble in alcohol, ether, acetone, benzene, and chloroform (HSDB , 1999).
OCTANOL/WATER PARTITION COEFFICIENT
- log Kow = 2.66 (HSDB , 1999)
HENRY'S CONSTANT
- 2.42x10(-3) atm/m(3)/mol (at 25 degrees C) (calculated from vapor pressure and water solubility) (Howard, 1990)
SPECTRAL CONSTANTS
OTHER/PHYSICAL
-REFERENCES
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