Difference between revisions of "Chlorofluorocarbons"
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| − | '''Chlorofluorocarbons''', often referred to as CFCs, or by the brand name for one formulation, ''Freon'', are [[man-made]], stable, and | + | '''Chlorofluorocarbons''', often referred to as CFCs, or by the brand name for one formulation, ''Freon'', are [[man-made]], stable, and non-toxic [[chemical]]s used primarily as refrigerants and aerosol propellants. |
| − | In 1984, scientists discovered CFCs to be one cause of the depletion of the [[ozone]] layer,{{fact-science}} which acts as a filter for ultraviolet | + | In 1984, scientists discovered CFCs to be one cause of the depletion of the [[ozone]] layer,{{fact-science}} which acts as a filter for ultraviolet radiation from the [[Sun]]. Because of this, many nations signed the Montreal-London Protocol. This [[treaty]] called for the production of CFCs to be stopped by the year 2000 for industrialized countries and the year 2010 for developing countries. The United States stopped production of CFCs in 1995, and alternate chemicals are used in their place. |
[[category:Chemistry]] | [[category:Chemistry]] | ||
[[category:Environment]] | [[category:Environment]] | ||
Revision as of 23:29, May 8, 2007
Chlorofluorocarbons, often referred to as CFCs, or by the brand name for one formulation, Freon, are man-made, stable, and non-toxic chemicals used primarily as refrigerants and aerosol propellants.
In 1984, scientists discovered CFCs to be one cause of the depletion of the ozone layer,Template:Fact-science which acts as a filter for ultraviolet radiation from the Sun. Because of this, many nations signed the Montreal-London Protocol. This treaty called for the production of CFCs to be stopped by the year 2000 for industrialized countries and the year 2010 for developing countries. The United States stopped production of CFCs in 1995, and alternate chemicals are used in their place.