Halogenated hydrocarbons


  • include fluorinated, chlorinated and brominated organic compounds
  • colourless and odourless gases

Main sources

  • use and inappropriate disposal of products with halogenated organic compounds
  • aerosol cans
  • synthetic foam
  • refrigeration
  • technical cleaning
  • fire protection


    • not toxic to humans and animals in normally occurring concentrations
    • affects the climate, contributes to the greenhouse gas effect
    • chlorinated and brominated compounds: major cause of ozone layer depletion in the stratosphere


    • global ban on ozone-depleting substance classes of chlorofluorocarbons (CFCs), persistent brominated organic compounds (halons, methyl bromide) and the chlorinated solvent carbon tetrachloride and 1,1,1-trichloroethane (Montreal Protocol)
    • fluorinated compounds included in the Kyoto Protocol adopted in 1997 to reduce greenhouse gases
    • ban on chemical substitutes such as Hydrochlorofluorocarbons (HCFCs) in industrial nations and to some degree in developing nations; replaced by hydrofluorocarbons (HFCs)

    Status and changes

    ozone-depleting substances were released into the atmosphere in large quantities especially in the 1970s and 1980s. These emissions have decreased significantly around the world since the 1990s.

    Last modification 16.12.2016

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