Chloroflourocarbons were discovered in the 1920's by Thomas Midgley, an organic chemist at General Motors Corporation. He was looking for inert, non-toxic, non-flammable compounds with low boiling points that could be used as refrigerants. He found what he was looking for in the form of two compounds: dichlorodifluoromethane (CFC-12) and trichloromonoflouromethane (CFC-11). In both compounds, different amounts of chlorine and fluorine are combined with methane, which is a combination of carbon and hydrogen. These two …showed first 75 words of 1181 total…

…showed last 75 words of 1181 total…gov/Ozone/defns.html#cfc Dolan, Edward. Our Poisoned Sky. Cobblehill books, New York: 1991 EPA's Stratospheric Ozone Protection Program World Wide Web Site [on-line]         http://www.epa.gov/docs/ozone/index.html, March 8, 1997. Gay, Kathylyn. Ozone. Impact, New York: 1989. Hoff, Mary and Mary Rodgers. Our endangered Planet Atmosphere. Lener Publication Company, Minneapolis: 1995. Preston, James. Air Conditioning and Refrigeration Technician's EPA Certification Guide, Quality Books, New York: 1994. Roan, Sharon. Ozone Crisis. Wiley science editions, New York: 1989.