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Bromotrifluoromethane, commonly referred to by the code numbers Halon 1301, R13B1, Halon 13B1 or BTM, is an organic halide with the chemical formula C Br F 3. It is used for gaseous fire suppression as a far less toxic alternative to bromochloromethane .
Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
The brand name "Halon" is frequently used interchangeably for BFCs. owever, not all Halons are technically BFCs (some contain chlorine also). BFCs attack the ozone layer even more aggressively than chlorofluorocarbons (CFCs), [ 2 ] and are powerful greenhouse gases , although due to shorter atmospheric lifetimes not as powerful as equivalent ...
Major recurring characters of the Halo multimedia franchise are organized below by their respective affiliations within the series' fictional universe. The franchise's central story revolves around conflict between humanity under the auspices of the United Nations Space Command or UNSC, and an alien alliance known as the Covenant.
Halons can be used on Class K (kitchen oils and greases) fires, but offer no advantages over specialised foams. Halon 1301 is common in total flooding systems. In these systems, banks of halon cylinders are kept pressurised to about 4 MPa (600 psi) with compressed nitrogen, and a fixed
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Halon may refer to: Haloalkane , or halogenoalkane, a group of chemical compounds consisting of alkanes with linked halogens (in particular, bromine-containing haloalkanes) Halomethane compounds:
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