Physical and Chemical data can be found on producers websites HCFC-22 (chloro-difluoro-methane)
Chlorodifluoromethane is a non-flammable, colourless and nearly odourless gas under normal conditions. A large proportion is used as a chemical intermediate and therefore not emitted into the atmosphere. Other important uses are in refrigeration and in air conditioning systems; with present practice, most of the chlorodifluoromethane so used will eventually be emitted into the atmosphere.
Its moderate water solubility and low octanol/water partition coefficient indicate a negligible bioaccumulation potential. Contamination of water and food would not be expected from its physical and chemical properties and has not been reported.
Joint Assessment of Commodity Chemicals No. 9
ECETOC, October 19, 1989
1,1-dichloro-1-fluoroethane (dichlorofluoroethane) is produced and used as a substitute for fully halogenated chlorofluorocarbons with comparable physical properties since it has more favourable environmental properties.
It is a volatile non flammable colourless liquid, with a weak ethereal odour and is slightly soluble in water. The low octanol/water partition coefficient (Pow = 2,3) indicates a low potential for bioaccumulation. The physical properties and results of acute ecotoxicity studies indicate that dichlorofluoroethane presents a low risk to the aquatic environment.
1 ppm = 4.85 mg/m3 (20ºC, 1013 hPa)
1 mg/m3 = 0.206 ppm (20ºC, 1013 hPa)