Cfcs The beginning of the CFC(chlorofluorocarbons) era started in 1928, when CFC were invented by a Du Pont chemist. CFC were outstrip known as "freons" and became famous as a safe, nonflammable refrigerant. Its invention became a great triumph when Freon took the place of southwesterly dioxide or ammonia which was employ as the working liquifiable in refrigerators. It eventually became widely used in rhytidoplasty car air conditioners and nontoxic propellants in aerosol cans. Its insulating properties in any case was used for blowing agents for plastics and foam cups.Thus CFCs became used all over the humanity and its business line got bigger and bigger until late in 1973.
Sherwood Rowland and Mario Molina, two dominating chemists, came up with a surprising precede in his calculations concerning the CFCs and ozone layer. CFCs ar basically inactive in the troposphere(around the meridian of 50,000 feet) so it would piecemeal drift upward until they reached the mid-stratosphere.(about 100,000 feet) At this...If you deprivation to get a full essay, order it on our website:
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