Difference between revisions of "Chlorofluorocarbon"
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== Description == | == Description == | ||
| − | Any of various halocarbon compounds containing [[carbon]], [[hydrogen]], [[chlorine]], and [[fluorine]]. The first chlorofluorocarbon (CFC), named Freon®, was developed in 1928. Since CFC's were chemically inert, non-irritating and nonflammable, they were chosen to replace [[ammonia (anhydrous)|ammonia] and [[sulfur dioxide]] as refrigerants. Other applications soon followed, such as aerosol propellants, fire extinguishers and blowing agents for foams. By the 1970s, it was determined that CFC's decompose in the stratosphere releasing atomic chlorine | + | Any of various halocarbon compounds containing [[carbon]], [[hydrogen]], [[chlorine]], and [[fluorine]]. The first chlorofluorocarbon (CFC), named Freon®, was developed in 1928. Since CFC's were chemically inert, non-irritating and nonflammable, they were chosen to replace [[ammonia (anhydrous)|ammonia] and [[sulfur dioxide]] as refrigerants. Other applications soon followed, such as aerosol propellants, fire extinguishers and blowing agents for foams. By the 1970s, it was determined that CFC's decompose in the stratosphere releasing atomic chlorine that reacts with [[ozone]]. This depletion of the ozone layer led to the phased prohibition of CFC's in 1979. Examples of CFC's are [[Freon]], [[Halon]], Frigen, Arcton, trichlorofluoromethane, and [[dichlorodifluoromethane]]. |
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| + | Chlorofluorocarbon is on the ILFI [[Red list of Materials|Red list]] of building materials. | ||
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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CFC; FCC; Freon®; Frigen; Halon; Arcton; trichlorofluoromethane; dichlorodifluoromethane | CFC; FCC; Freon®; Frigen; Halon; Arcton; trichlorofluoromethane; dichlorodifluoromethane | ||
| − | == | + | == Risks == |
| − | Nonflammable and noncorrosive | + | * Nonflammable and noncorrosive |
| − | + | * Depletes the Earth's protective ozone layer | |
| − | + | * Can cause headaches, sleepiness, numbness, neurotoxicity as well as upper respiratory problems. | |
| + | ==Resources and Citations== | ||
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
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* ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | * ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | ||
| − | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: Chlorofluorocarbon. Retrieved July 1, 2003. | |
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: Chlorofluorocarbon | ||
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* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000 | * Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000 | ||
Latest revision as of 13:15, 3 November 2023
Description
Any of various halocarbon compounds containing Carbon, Hydrogen, Chlorine, and Fluorine. The first chlorofluorocarbon (CFC), named Freon®, was developed in 1928. Since CFC's were chemically inert, non-irritating and nonflammable, they were chosen to replace [[ammonia (anhydrous)|ammonia] and Sulfur dioxide as refrigerants. Other applications soon followed, such as aerosol propellants, fire extinguishers and blowing agents for foams. By the 1970s, it was determined that CFC's decompose in the stratosphere releasing atomic chlorine that reacts with Ozone. This depletion of the ozone layer led to the phased prohibition of CFC's in 1979. Examples of CFC's are Freon, Halon, Frigen, Arcton, trichlorofluoromethane, and Dichlorodifluoromethane.
Chlorofluorocarbon is on the ILFI Red list of building materials.
Synonyms and Related Terms
CFC; FCC; Freon®; Frigen; Halon; Arcton; trichlorofluoromethane; dichlorodifluoromethane
Risks
- Nonflammable and noncorrosive
- Depletes the Earth's protective ozone layer
- Can cause headaches, sleepiness, numbness, neurotoxicity as well as upper respiratory problems.
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
- Encyclopedia Britannica, http://www.britannica.com Comment: Chlorofluorocarbon. Retrieved July 1, 2003.
- Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000