Effective fire suppressants, which leave no residue and are of relatively low toxicity. Historically, they have been used in applications where conventional extinguishing agents (e.g., water) would be dangerous or result in significant peripheral damage - (e.g., electronics, electrical, and HVAC.) Note, Halons adversely affect stratospheric ozone and are being phased out.
These man-made substances (also known as bromofluorocarbons) are chlorofluorocarbons that contain bromine. See also Chlorofluorocarbons and Related Compounds.
Compounds, also known as bromofluorocarbons, that contain bromine, fluorine, and carbon. They are generally used as fire extinguishing agents and cause ozone depletion. Bromine is many times more effective at destroying stratospheric ozone than chlorine. See ozone depleting substance.
A class of simple hydrocarbon derivatives in which bromine, chlorine and fluorine are substituted for some or all of the hydrogen atoms. These compounds are used mainly as fire-extinguishing gases, the two best known being Halon 1211 (CF2BrCl) and Halon 1301 (CF3Br). The chemicals are long-lived in the troposphere and are implicated in the depletion of the ozone layer.
A family of ODS; three kinds of halons are commonly produced: Halon-1211 (which includes carbon, fluorine, chlorine and bromine; and Halons 1301 and 2402, which include carbon, fluorine and bromine. Their atmospheric lifetimes range from 20 to 77 years. These are most commonly used as fire retardants. The Montreal Protocol allows non-Article 5 countries to produce and consume halons after January 1994 up to 15% of 1986 levels. Article 5 countries face a delayed phase out in these chemicals.
halons include bromofluorocarbons and bromochlorofluorocarbons, which are very stable chemicals that are involved in ozone depletion in a similar manner to CFCs
Halogenated carbon compounds used in fire extinguishing equipment and contributing to stratospheric ozone depletion. Being phased out under Montreal Protocol.
Chemical compounds (belonging to the ODSs) developed from hydrocarbons by replacing atoms of hydrogen with atoms of halogens, such as fluorine, chlorine, or bromine. CFCs are halons.
See halogenated hydrocarbons.
Fire-extinguishing agents with high ODPs.
ozone-depleting gases, used in fire protection equipment.
include bromofluorocarbons and bromochlorofluorocarbons, which are very stable chemicals that act similarly to CFCs in ozone depletion; previously used in fire extinguishers
A family of fully halogenated hydrocarbons containing bromine. These substances are environmentally harmful because they deplete the earth's stratospheric ozone layer.
Man-made chemical compounds that contain bromine or iodine.
These man-made substances are similar to chlorofluorocarbons but contain bromine. They also destroy the ozone layer.
Chemical compounds developed from hydrocarbons by replacing atoms of hydrogen with atoms of halogens, such as fluorine, chlorine, or bromine. CFCs are halons (see above). Halons are widely used as fire extinguishing agents.
A group of brominated organic compounds used as fire retardants, including CF3Br (halon 1301), CF2Br2 (halon 1202), CF2BrCl (halon 1211), and CF2BrCF2Br (halon 2402). The transport of these compounds to the stratosphere, followed by their photolysis to release Br atoms, gives this group a very high ozone depletion potential. The production of these compounds is now banned as a result of the Montreal Protocol and its subsequent amendments.
Bromine-containing compounds with long atmospheric lifetimes whose breakdown in the stratosphere causes depletion of ozone. Halons are used in fire-fighting.
