   Chlorofluorocarbon
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Sigma KEE - Chlorofluorocarbon
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chlorofluorocarbon
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A chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane. A common subclass are the hydrochlorofluorocarbons (HCFCs), which contain hydrogen, as well. They are also commonly known by the DuPont trade name Freon. The most common representative is dichlorodifluoromethane (R-12 or Freon-12). Many CFCs have been widely used as refrigerants, propellants (in aerosol applications), and solvents. The manufacture of such compounds has been phased out by the Montreal Protocol because they contribute to ozone depletion. [from Wikipedia]
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compound substance |
The Class of Substances that contain two or more elements (ElementalSubstances) in definite proportion by weight. The composition of a pure compound will be invariant, regardless of the method of preparation. Compounds are composed of more than one kind of atom (element). The term molecule is often used for the smallest unit of a compound that still retains all of the properties of the compound. Examples: Table salt (sodium chloride, NaCl), sugar (sucrose, C_{12}H_{22}O_{11}), and water (H_2O).
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freon-12 | A Chlorofluorocarbon with formula CCl2F2, which prior to widespread environmental concerns about its use was the most common refridgerant. |
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