1,1,2-트리클로로-1,2,2-트리플루오로에탄

1,1,2-트리클로로-1,2,2-트리플루오로에탄 속성

1,1,2-트리클로로-1,2,2-트리플루오로에탄 C화학적 특성, 용도, 생산

화학적 성질

colourless liquid or gas

물리적 성질

Clear, colorless liquid with a carbon tetrachloride-like odor at high concentrations

용도

Dry-cleaning solvent, fire extinguishers, to make chlorotrifluoroethylene, blowing agent, polymer intermediate, solvent drying, drying electronic parts and precision equipment.

일반 설명

Colorless liquid with a sweet, ether-like odor. Sinks in water.

공기와 물의 반응

Insoluble in water.

반응 프로필

1,1,2-Trichlorotrifluoroethane yields violent reactions with Al, Ba, Li, Sm, Na/K alloy and Ti . May react exothermically with aluminum.

건강위험

Inhalation causes irritation of the nose, throat, and lungs. High concentrations may cause death by respiratory failure or asphyxiation. May produce superficial skin burns or defatting type dermatitis and may irritate the eyes.

화재위험

Noncombustible liquid.

공업 용도

1,1,2-Trichlorotrifluoroethane (CFC 113) is generally a stable molecule not prone to the reactivity that is often shown by the chlorinated hydrocarbons. The solvent blends that contain the fluorinated hydrocarbon and an alcohol display some metal reactivity which is inhibited by adding nitromethane as a stabilizer.

Safety Profile

Mildly toxic by ingestion and inhalation. Affects the central nervous system in humans. A sktn irritant. Combustible when exposed to heat or flame. Incompatible with Al, Ba, Li, Sm, NaK alloy, Ti. See also CHLORINATED HYDROCARBONS, ALIPHATIC; and FLUORIDES.

잠재적 노출

TTE is used as a solvent and refrigerant; it is used in fire extinguishers; as a blowing agent and as an intermediate in the production of chlorotrifluoroethylene monomer by reaction with zinc.

Carcinogenicity

A 2 year inhalation toxicity study/carcinogenicity study was conducted by Trochimowicz et al. in which groups of 100 male and 100 female rats were exposed to levels of up to of
20,000 ppm of CFC 113 6 h/day, 5 days/week for 2 years. Although five nasal tumors were seen, one at 20,000 ppm and four at 10,000 ppm, all five were different morphological types and were judged not to be exposure related. In addition, there was a small increase (5.8%) in pancreatic islet cell adenomas in the females exposed to 20,000 ppm; however, this was within the normal control range.
In a second study, injection of 0.1mLof 10% CFC 113 was not carcinogenic. But when given with a 5% solution of piperonyl butoxide, hepatomas were induced in male mice. The significance of this experimental finding has never been determined.

환경귀착

Biological. In an anoxic aquifer beneath a landfill in Ottawa, Ontario, Canada, there was evidence to suggest that 1,1,2-trichlorotrifluoroethane underwent reductive dehalogenation to give 1,2-difluoro-1,1,2-trichloroethylene and 1,2-dichloro-1,1,2-trifluoroethane. It was proposed that the latter compound was degraded via dehydrodehalogenation to give 1-chloro-1,1,2-trifluoroethylene (Lesage et al., 1990).
Chemical/Physical. 1,1,2-Trichlorotrifluoroethane will not hydrolyze to any reasonable extent (Kollig, 1993).

운송 방법

UN3082 Environmentally hazardous substances, liquid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

Purification Methods

Wash it with water, then with weak alkali. Dry it with CaCl2 or H2SO4 and distil it. [Locke et al. J Am Chem Soc 56 1726 1934, Beilstein 1 III 157, 1 IV 142.]

비 호환성

Violent reaction with chemically active metals (such as powdered aluminum; beryllium, magnesium and zinc); calcium. Contact with alloys containing more than 2% magnesium causes decomposition, releasing hydrogen chloride, hydrogen fluoride; and carbon monoxide. May react exothermically with aluminum.

폐기물 처리

Incineration, preferably after mixing with another combustible fuel. Care must be exercised to assure complete combustion to prevent the formation of phosgene. An acid scrubber is necessary to remove the halo acids produced.

1,1,2-트리클로로-1,2,2-트리플루오로에탄 준비 용품 및 원자재

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