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halon (chlorofluorocarbon, organic material, ... Materials (hierarchy name)) |
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Note: Generic name for any of a class of compounds formerly used as a fire-extinguishing agent. When exposed to flame, these chlorofluorocarbon gases release halogen atoms which interact with hydrogen atoms, suppressing combustion in the process. They also deplete the earth's ozone when exposed to solar ultraviolet light and have consequently been withdrawn from use. Included in the group are Halon: dichlorodifluoromethane, CCl2F2; Halon 1211: bromochlorodifluoromethane, CBrClF2; and Halon 1301: trifluorobromomethane, CBrF3.
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| Terms: |
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| halon (preferred,C,U,English-P,D,U,N)
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| halon (Dutch-P,D,U,U)
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| halons (C,U,English,UF,U,U)
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Facet/Hierarchy Code: M.MT |
Hierarchical Position:
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Materials Facet |
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.... Materials (hierarchy name) (G) |
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........ materials (substances) (G) |
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............ <materials by composition> (G) |
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................ organic material (G) |
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.................... chlorofluorocarbon (G) |
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........................ halon (G) |
Additional Notes: |
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| Dutch ..... Algemene naam voor een klasse verbindingen die vroeger werden gebruikt als brandblusmiddel. Wanneer ze aan vlammen worden blootgesteld, geven deze chloorfluorkoolstofgassen halogeenatomen af, die reageren met waterstofatomen en daarbij verbranding onderdrukken. Ze onttrekken ook ozon aan de aarde wanneer ze worden blootgesteld aan ultraviolet zonlicht en worden daarom niet meer gebruikt. De groep bestaat uit dichloordifluormethaan (CCl2F2) ofwel Halon 122, broomchloordifluormethaan (CBrClF2) ofwel Halon 1211 en broomtrifluormethaan (CBrF3) ofwel Halon 1301. |
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Sources and Contributors: |
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