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chlorofluorocarbons
(Encyclopedia)chlorofluorocarbons klōrˌəflo͝orˈəkärˌbənz, klôrˌ– [key] (CFCs), organic compounds that contain carbon, chlorine, and fluorine atoms. CFCs are highly effective refrigerants that were deve...HCFCs
(Encyclopedia)HCFCs: see chlorofluorocarbons.HFCs
(Encyclopedia)HFCs: see chlorofluorocarbons.CFCs
(Encyclopedia)CFCs: see chlorofluorocarbons.halons
(Encyclopedia)halons: see under chlorofluorocarbons. ...hydrochlorofluorocarbons
(Encyclopedia)hydrochlorofluorocarbons: see under chlorofluorocarbons. ...hydrofluorocarbons
(Encyclopedia)hydrofluorocarbons: see under chlorofluorocarbons. ...Freon
(Encyclopedia)Freon frēˈŏn [key] [trade name], any one of a special class of chemical compounds that are used as refrigerants, aerosol propellants, and solvents. These compounds are haloalkanes, i.e., halogen de...Montreal Protocol
(Encyclopedia)Montreal Protocol, officially the Protocol on Substances That Deplete the Ozone Layer, treaty signed on Sept. 16, 1987, at Montreal by 25 nations; 197 nations are now parties to the accord. The protoc...stratosphere
(Encyclopedia)stratosphere strătˈəsfēr [key], second lowest layer of the earth's atmosphere. The level from which it extends outward varies with latitude; it begins c.51⁄2 mi (9 km) above the poles, c.6 or 7 ...Browse by Subject
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