Chlorofluorocarbon
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Chlorofluorocarbon (CFC) is a type of compound consisting of chlorine, fluorine, and carbon.
CFCs are very stable in the troposphere. They move to the stratosphere and are broken down by strong ultraviolet light, where they release chlorine radicals that act as a catalyst in the breakdown of ozone into oxygen, which results in the depletion the ozone layer.
CFCs are commonly used as refrigerants, solvents, and foam blowing agents. The most common CFCs are CFC-11, CFC-12, CFC-113, CFC-114, and CFC-115.
The ozone depletion potential (ODP) for each CFC is, respectively, 1, 1, 0.8, 1, and 0.6.