dichlorodifluoromethane

…compounds, especially trichlorofluoromethane (CFC-11) and dichlorodifluoromethane (CFC-12), found use as aerosol-spray propellants, solvents, and foam-blowing agents. They are well suited for these and other applications because they are nontoxic and nonflammable and can be readily converted from a liquid to a gas and vice versa.

…to produce compounds such as dichlorodifluoromethane (Cl₂CF₂), the coolant which had been used widely in most household refrigerators and air conditioners. Since chlorofluorocarbons, such as dichlorodifluoromethane, play an active role in the depletion of the ozone layer, their manufacture and use have been restricted, and refrigerants containing hydrofluorocarbons are now…

He also found that dichlorodifluoromethane (a type of fluorocarbon commercialized under the trade name Freon-12) could be used as a safe refrigerant.

Since chlorofluorocarbons, such as dichlorodifluoromethane, play an active role in the depletion of the ozone layer, their manufacture and use have been restricted, and refrigerants containing hydrofluorocarbons are now preferred.

…these is Freon 12 (CCl₂F₂), dichlorodifluoromethane; also used is Freon 22 (CHClF₂), chlorodifluoromethane. Several analogous compounds containing carbon, fluorine, chlorine, and sometimes hydrogen are available.