Organic Chemistry

The Columbia Encyclopedia, 6th ed. The Oxford Pocket Dictionary of Current English Further reading

Freon

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Freon [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 derivatives of saturated hydrocarbons (see alkane ). Every Freon contains at least some fluorine in its molecule, and most contain chlorine or bromine as well. Freons are generally colorless, odorless, nontoxic, noncorrosive, nonflammable, and chemically unreactive. The most commonly used is Freon-12, or dichlorodifluoromethane (CCl ₂ F ₂ ), which boils at -29.8°C and is thus a gas at ordinary temperatures and pressures. It is prepared by the reaction of carbon tetrachloride with hydrogen fluoride in the presence of a catalyst. There are a number of other Freons. Some of those containing bromine in their molecules are used in fire extinguishers. See also chlorofluorocarbons .

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Freon

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

Fre·on / ˈfrēˌän/ (also fre·on) • n. trademark an aerosol propellant, refrigerant, or organic solvent consisting of one or more of a group of chlorofluorocarbons and related compounds.

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"Freon." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>.

"Freon." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O999-freon.html

"Freon." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-freon.html

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Free newspaper and magazine articles

	Footing the bill for Freon flimflammery.(Commentary) Newspaper article from: The Washington Times (Washington, DC); 9/17/1996
	Only a trained mechanic should add Freon.(Auto Weekend) Newspaper article from: The Washington Times (Washington, DC); 8/14/1998
	Freon ban is not all bad news for drivers.(Auto Weekend) Newspaper article from: The Washington Times (Washington, DC); 11/22/1996