Difference between revisions of "Chlorofluorocarbons"
Jump to navigation
Jump to search
Eldestport (talk | contribs) (sentence structure...) |
(links, minor copyediting, aerosol) |
||
| Line 1: | Line 1: | ||
| − | CFCs, or Freon, are man-made, stable, and nontoxic | + | '''Chlorofluorocarbons''', often referred to as CFCs, or by the brand name for one formulation, ''Freon'', are [[man-made]], stable, and nontoxic [[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, which acts as a filter for ultraviolet light. Because of this, many nations signed the Montreal-London Protocol. This [[treaty]] calls 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. | ||
Revision as of 17:33, April 15, 2007
Chlorofluorocarbons, often referred to as CFCs, or by the brand name for one formulation, Freon, are man-made, stable, and nontoxic chemicals used primarily as refrigerants and aerosol propellants.
In 1984, scientists discovered CFCs to be one cause of the depletion of the ozone layer, which acts as a filter for ultraviolet light. Because of this, many nations signed the Montreal-London Protocol. This treaty calls 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.