Halocarbons are partially halogenated carbon containing compounds. They may contain chlorine, fluorine, bromine, iodine or combinations of these elements. Halocarbons include compounds produced by the oceans like methyl bromide and methyl chloride and man-made compounds such as chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs). The man-made compounds are used as solvents, refrigerants and foam blowing agents and contribute to stratospheric ozone depletion as well as global warming.