SPECTRUM

Chemical Fact Sheet

Chemical Abstract Number (CAS #) 76131
CASRN 76-13-1
Synonyms1,1,2-Trichloro-1,2,2-trifluoroethane
Ethane, 1,1,2-trichloro-1,2,2-trifluoro-
Freon 113
Molecular FormulaC2Cl3F3

Link to the National Library of Medicine's Hazardous Substances
Database for more details on this compound.

Use CHEM INT FOR POLYCHLOROTRIFLUOROETHYLENE RESINS & POLYCHLOROTRIFLUOROETHYLENE-VINYLIDENE FLUORIDE. FIRE EXTINGUISHERS; BLOWING AGENT; SOLVENT DRYING; DRYING ELECTRONIC PARTS & PRECISION EQUIPMENT. CFC-113 IS USED IN CENTRIFUGAL COMPRESSOR SYSTEMS FOR WATER OR BRINE CHILLING. INTERMEDIATE IN THE PRODUCTION OF CHLOROTRIFLUOROETHYLENE MONOMER BY REACTION WITH ZINC. It is not used in aerosol formulations as a propellant component, but is used as a solvent or active ingredient in certain aerosol formulations. Selective solvent in degreasing electrical equipment, photographic films, magnetic tapes, precision instruments, plastics, glass, elastomers, or metal components. Dry cleaning solvent for all fabrics, leather, and suede. Solvent in textile industry, and in special laboratory usage. Refrigerant in commerical/industrial air conditioning and industrial process cooling. Chem intermediate for dechloronization of chemicals in the manufacture of polymers and copolymers in the production of high-temp lubricants. Foaming or blowing agent in the manufacture of polymers for flame retardancy.
Consumption Patterns MOST CFC 113 IS USED AS A SOLVENT ALTHOUGH IT ALSO HAS REFRIGERANT APPLICATIONS (1984). REFRIGERANTS, 39%; FOAM BLOWING AGENTS, 17%; SOLVENTS, 14%; FLUOROPOLYMERS, 14%; STERILANT GAS, 2%; AEROSOL PROPELLANTS, 2%; FOOD FREEZANT, 1%; OTHER, 8%; EXPORTS, 3% (1985) FLUOROCARBONS
Apparent Color Colorless gas ; Volatile liquid
Odor Nearly odorless ; Odor like carbon tetrachloride at high concentrations
Boiling Point 47.7 DEG C @ 760 MM HG
Melting Point -36.4 DEG C
Molecular Weight 187.38
Density 1.5635 @ 25 DEG C/4 DEG C
Odor Threshold Concentration Odor detection in air: 4.5x10 1 ppm; odor recognition in air: 6.8x10 1 ppm Purities not specified Low: 342 mg/cu m; High: 1026 mg/cu m From table
Sensitivity Data May cause irritation of eyes & throat. 1,1,2-Trichloro-1,2,2-trifluoroethane on prolonged or repeated contact with skin may cause skin irritation.
Environmental Impact Freon 113 may be released to the environment as emissions from production, storage, transport, turbine engines, use as a foaming agent, refrigerant, and solvent, or use in the manufacture of fluoropolymers, and it may be released to soil from the disposal of products containing this compound (e.g. commerical industrial refrigeration units). The global release rate of Freon 113 is estimated to be 9.1X10 4 tons per year, which corresponds with a 15% annual increase in the abundance of Freon 113 in the atmosphere. If released to soil, Freon 113 would rapidly volatilize from soil surfaces or leach through soil possibly into groundwater. If released to water, essentially all Freon 113 is expected to be lost by volatilization (half-life 4 hours from a model river). If released to the atmosphere, Freon will not degrade in the troposphere. This compound will gradually diffuse into the stratosphere (half-life 20 years). In the stratosphere the dominant removal mechanism is photolysis and reaction with singlet oxygen is of secondary importance (stratospheric lifetime 63-122 years). Due to its stability, detection long distances from its sources of emissions has occurred. General population exposure occurs by inhalation of Freon 113 found in ambient air. Occupational exposure may occur by inhalation of contaminated air or dermal contact.
Environmental Fate Because CFC 113 has very limited solubility in water and is highly volatile, all releases of CFC 113 can be expected to be eventually conveyed to the atmosphere. ATMOSPHERIC: Because it is essentially inert in the troposphere, CFC 113 is transported slowly to the stratosphere. While CFC 113 has some potential to perturb stratospheric ozone, there is presently no evidence demonstrating that any indirect effects of CFC 113 on human health has or is likely to occur as a result of ozone perturbation. TERRESTRIAL FATE: If released to soil, Freon 113 would rapidly volatilize from soil surfaces or leach through soil. AQUATIC FATE: If released to water, essentially all Freon 113 is expected to be lost by volatilization (half-life 4 hours from a model river). Chemical hydrolysis, bioaccumulation and adsorption to sediments would not be significant fate processes in water. ATMOSPHERIC FATE: If released to the atmosphere, essentially all Freon 113 is expected to exist in the vapor phase due to its extremely high vapor pressure. The moderate water solubility of Freon 113 suggests that some loss by wet deposition occurs, but any loss by this mechanism is probably returned to the atmosphere by volatilization. Freon 113 will not degrade in the troposphere, thus diffusion from the troposphere to the stratosphere would be the sole removal mechanism (half-life 20 years ). In the stratosphere direct photolysis would be the dominant removal mechanism and reaction with singlet oxygen would be of secondary importance. The stratospheric lifetime of this compound ranges between 63 and 122 years. As a result of its persistence in the atmosphere, this compound is transported long distances and its concentration should be fairly uniform throughout the globe away from known sources.
Drinking Water Impact Detected in water samples taken from the Niagara River and Cayuhoga River . Not detected in water samples taken from Lake Ontario .

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