Chlorodifluoromethane or difluoromonochloromethane is a
hydrochlorofluorocarbon (HCFC). This colorless gas is better known as
HCFC-22, or R-22. It is commonly used as a propellant and refrigerant.
These applications are being phased out in developed countries due to
the compound's ozone depletion potential (ODP) and high global warming
potential (GWP), although global use of R-22 continues to increase
because of high demand in developing countries. R-22 is a versatile
intermediate in industrial organofluorine chemistry, e.g. as a precursor
to tetrafluoroethylene. R-22 cylinders are colored light green.