AskDefine | Define freon

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See also Freon

West Frisian

Noun

freon

Related Term

Extensive Definition

Freon is DuPont's trade name for its odorless, colorless, nonflammable, and noncorrosive chlorofluorocarbon and hydrochlorofluorocarbon refrigerants, which are used in air conditioning and refrigeration systems.

History

Freon was initially developed in the early 20th century as an alternative to the toxic gases that were previously used as refrigerants, such as ammonia, chloromethane, and sulfur dioxide. Freon, in this case dichlorodifluoromethane, was invented by Thomas Midgley, Jr. with co-inventor Charles Kettering. Each Freon product is designated by a number; for instance, Freon-11 is trichlorofluoromethane, while Freon-12 is dichlorodifluoromethane. In the 1990s, most uses of Freon were phased out due to the negative effects that chlorofluorocarbons and hydrochlorofluorocarbons have on the Earth's ozone layer.

Footnotes

See also

freon in Bulgarian: Фреон
freon in Czech: Freon
freon in Spanish: Freón
freon in French: Fréon (gaz)
freon in Croatian: Freon
freon in Italian: Freon
freon in Dutch: Freon
freon in Norwegian: Freon
freon in Polish: Freony
freon in Portuguese: Freon
freon in Swedish: Freon
freon in Vietnamese: Freon
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