Chemicals consisting of carbon, sometimes hydrogen, and either chlorine, fluorine bromine or iodine.
Halocarbons are compounds derived from methane (CH4) and ethane (C2H6), where one or several of the hydrogen atoms are substituted with chlorine (Cl), fluorine (F) and/or bromine (Br). These compounds are so called "partly halogenated halocarbons". When all the hydrogen atoms are substituted the compound is said to be fully halogenated. The ability of halocarbons depleting ozone in the stratosphere is due to their content of chlorine and/or bromine and their chemical stability. Fully halogenated halocarbons have much higher chemical stability (atmospheric lifetime typically 100-500 years) than partly halogenated halocarbons (atmospheric lifetime typically 1-20 years). CFCs, HCFCs and HFCs are examples of halocarbons.
A class of halide (i.e. containing Chlorine, Bromine or Iodine) compounds, including CFC's. These can break down to form various ozone-depleting radicals.
compounds that combine carbon with either fluorine, chlorine, or bromine. These compounds can act as powerful greenhouse gases. Halocarbons containing chlorine and bromine also cause ozone depletion in the stratosphere. Included in the family of halocarbons are chlorofluorocarbons (CFCs) and the hydrochlorofluorocarbons (HCFCs).
Compounds of carbon combined with one or more of the elements called halogens (fluorine, chlorine, bromine, iodine, and astatine). Halocarbons containing fluorine, chlorine and bromine contribute to ozone depletion and to the enhanced greenhouse effect.
A family of inert, non-toxic chemicals that contain halogens, such as chlorine, fluorine, or bromine. Halocarbons include chlorofluorocarbons, perfluorocarbons, hydrochlorofluorocarbons, and bromofluorocarbons. Halocarbons are used in refrigeration, packaging, insulation, solvents, aerosol propellants, and other uses. They generally have a high global warming potential. The use of many halocarbons is scheduled to be phased out under the Montreal Protocol.
Halocarbons are entirely manmade chemicals, meaning that they are not found on their own in nature. When released into the atmosphere as greenhouse gases, they can significantly disrupt global climate patterns. There is a lower concentration of atmospheric halocarbons than other greenhouse gases, but the warming effects of halocarbons ranges from 3000 to 13,000 times that of carbon dioxide, and they remain in the atmosphere for hundreds of years. The most commonly known halocarbons are CFCs (chlorofluorocarbons), HCFCs (hydrochlorofluorocarbons), and HFCs (hydroflurocarbons). Their most common use is in refrigeration and air conditioning technologies but they are also used heavily in the electric system infrastructure.
chemicals containing carbon and members of the halogen family
are halons, chlorofluorocarbons, hydrochlorofluorocarbons, and other chemicals that deplete the stratospheric ozone layer. The term halocarbons is used in the Montreal Protocol on Substances that Deplete the Ozone Layer.
Man-made substances including the chlorofluorocarbons and halons.
Compounds containing either chlorine, bromine, fluorine or iodine and carbon. Sometime Hydrogen can be present in the compound. Such compounds can act as greenhouse gases in the atmosphere. The chlorine and bromine containing halocarbons are also involved in the depletion of the ozone layer.
Compounds containing either chlorine, bromine or fluorine and carbon. Such compounds can act as powerful greenhouse gases in the atmosphere. The chlorine and bromine containing halocarbons are also involved in the depletion of the ozone layer. () Halocarbons are responsible for about 10% of the human-induced greenhouse effect. CFCs, HCFCs, HFCs and PFCs are all halocarbons. ()
A group of substances of similar chemical structure often used as refrigerants.
