Trichlorofluoromethane CFC

Krone HE, RK Thauer (1992) Dehalogenation of trichlorofluoromethane (CFC-11) by Methanosarcina barkeri. EEMS Microbiol Lett 90 201-204. 

Sonier DN, NLDuran, GB Smith (1994) Dechlorination of trichlorofluoromethane (CFC-11) by sulfate-reducing bacteria from an aquifer contaminated with halogenated aliphatic compounds. Appl Environ Microbiol 60 4567-4572. 

No information on potentially susceptible populations was located for HCFC-141b. A structurally related chemical, 1,1,1,2-tetrafluoroethane, has been tested in metered-dose inhalers for the treatment of asthma. Test subjects included adult and pediatric asthma patients as well as individuals with severe COPD. No adverse effects were reported (Smith et al. 1994 Taggart et al. 1994 Ventresca 1995 Woodcock 1995). The structurally related chemicals trichlorofluoromethane (CFC-11) and dichlorodifluoromethane (CFC-12) are presently used in metered-dose inhalers for the treatment of asthma but are phased out under the Montreal Protocol of 1987 (Alexander 1995). Structurally related compounds including 1,1,1-trichloroethane and trichlorofluoromethane were also tested for cardiac sensitization in a dog model with experimentally induced myocardial infarction. In these experiments cardiac sensitization occurred under the same conditions as in healthy dogs (Trochimowicz et al. 1976). 

CF 2, see 1,1,1-Trichloroethane CFC 11, see Trichlorofluoromethane CFC 21, see Dichlorofluoromethane CFC 112, see 1,2-Difluorotetrachloroethane CFC 112a, see 1,1-Difluorotetrachloroethane CFC 113, see 1,1,2-Trichlorotrifluoroethane Chelen, see Chloroethane Chemform, see Methoxychlor Chemathion, see Malathion Chemical 109, see ANTU Chemical mace, see a-Chloroacetophenone Chemox PE, see 2,4-Dinitrophenol Chempenta, see Pentachlorophenol Chemphene, see Toxaphene Chemrat, see Pindone Chemsect DNOC, see 4,6-Dinitro-ocresol Chemtol, see Pentachlorophenol Chevron acetone, see Acetone Chimec NR, see 2-Bntoxyethanol Chinone, see / Qninone Chinnfnr, see Carbofuran Chipco thiram 75, see Thiram Chipco turf herbicide "D", see 2,4-D Chladone 11, see Trichlorofluoromethane Chlon, see Pentachlorophenol Chlorallylene, see Allyl chloride Chloran, see Lindane 4-Chloraniline, see 4-Chloroaniline p-Chloraniline, see 4-Chloroaniline Chlorbenzene, see Chlorobenzene Chlorbenzol, see Chlorobenzene p-Chlor-ro-cresol, see p-Chloro-ro-cresol Chlordantoin, see Amyl acetate Chlordan, see Chlordane... 

Until the late 1980s trichlorofluoromethane (CFC 11) was also used to blow flexible, open-celled polyurethane foams used in furniture upholstery however, the rapid loss of the blowing agent to the atmosphere meant that this CFC application was one of the first to be eliminated when concern over the possible effects of CFCs on stratospheric ozone increased. Similarly, dichlorodifluoromethane (CFC 12) in the relatively minor application of polystyrene hot-food containers was also rapidly replaced by hydrocarbon-blowing agents. 

Temperature Dependence of Molecular Diffusivity in Water of Trichlorofluoromethane (CFC-11)... 

Box 20.2 summarizes the numerical evaluation of this expression with experimental data obtained for trichlorofluoromethane (CFC-11) by Zheng et al. (1998) (see also Table 20.3). The behavior of CFC-11 is typical for many volatile organic substances. The relative effect of temperature on vIW decreases from 4 percent per Kelvin at 5°C and low wind speed to 2.4 percent per Kelvin at 25°C and high wind speed. The total increase of vlw between 5°C and 25°C amounts to the factors 2 (low wind speed) and 1.7 (high wind speed), respectively. 

Several methods to evaluate the temperature variation ofDiw are given in Box 18.4. As an example we use the values for trichlorofluoromethane (CFC-11) calculated from the activation theory model (see Box 18.4, Eq. 2) ... 

C. Relative temperature dependence of Sciw and via calculated for trichlorofluoromethane (CFC-11) from Eqs. 1 and the boundary layer model for moderate and high wind speed (Eq. 20-16) ... 

Reported vapor pressures and Henry s law constants of trichlorofluoromethane (CFC-11) at various temperatures and the coefficients for the vapor pressure equations... 

Hard Polyurethane Foam past trichlorofluoromethane (CFC-11) —> 1,1-dichloro-l-fluoroethane (HCFC-141b) spray foam (1) mixture of 1,1,1,3,3-pentafluoropropane (HFC-245fa) and 1,1,1,3,3-pentafluorobutane (HFC-365mfc) (2) CO2 (spray foam using water or spray foam using liquid carbon dioxide)... 

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