Difference between revisions of "Chlorofluorocarbon"

From CAMEO
Jump to navigation Jump to search
(username removed)
 
 
(4 intermediate revisions by 4 users not shown)
Line 1: Line 1:
 
== Description ==
 
== Description ==
  
Any of various halocarbon compounds containing [http://cameo.mfa.org/materials/fullrecord.asp?name=carbon carbon], [http://cameo.mfa.org/materials/fullrecord.asp?name=hydrogen hydrogen], [http://cameo.mfa.org/materials/fullrecord.asp?name=chlorine chlorine], and [http://cameo.mfa.org/materials/fullrecord.asp?name=fluorine 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 [http://cameo.mfa.org/materials/fullrecord.asp?name=ammonia (anhydrous) ammonia] and [http://cameo.mfa.org/materials/fullrecord.asp?name=sulfur dioxide 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 which reacts with [http://cameo.mfa.org/materials/fullrecord.asp?name=ozone ozone]. This depletion of the ozone layer led to the phased prohibition of CFC's in 1979. Examples of CFC's are [http://cameo.mfa.org/materials/fullrecord.asp?name=Freon Freon], [http://cameo.mfa.org/materials/fullrecord.asp?name=Halon Halon], Frigen, Arcton, trichlorofluoromethane, and [http://cameo.mfa.org/materials/fullrecord.asp?name=dichlorodifluoromethane dichlorodifluoromethane].
+
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 which 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]].
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
CFC; FCC; Freon; Frigen; Halon; Arcton; trichlorofluoromethane; dichlorodifluoromethane
+
CFC; FCC; Freon®; Frigen; Halon; Arcton; trichlorofluoromethane; dichlorodifluoromethane
  
== Hazards and Safety ==
+
== Risks ==
  
Nonflammable and noncorrosive
+
* Nonflammable and noncorrosive
  
== Authority ==
+
==Resources and Citations==
  
* Richard S. Lewis, 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
  
 
* ''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. Encyclopdia Britannica. Retrieved July 1, 2003, from Encyclopdia Britannica Premium Service.
+
* ''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
 
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000

Latest revision as of 13:28, 29 May 2022

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 which 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.

Synonyms and Related Terms

CFC; FCC; Freon®; Frigen; Halon; Arcton; trichlorofluoromethane; dichlorodifluoromethane

Risks

  • Nonflammable and noncorrosive

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