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Halon 1301 is widely used by the U.S. Military [7] and NASA in a 2-3/4 lb portable extinguisher with a sealed, disposable cylinder for quick recharging. Other agents such as CO 2 and FE-36 (HFC-236fa) wet chemical are largely replacing halon 1301 for environmental concerns. Civilian models in 2-3/4, 3, and 4 lb sizes were also made.
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 ]
Bromodifluoromethane or Halon 1201 or FC-22B1 is a gaseous trihalomethane or a ... Bromodifluoromethane was used as a refrigerant and in fire extinguishers.
Bromochloromethane or methylene bromochloride and Halon 1011 is a mixed halomethane.It is a heavy low-viscosity liquid with refractive index 1.4808.. Halon 1011 was invented for use in fire extinguishers in Germany during the mid-1940s, in an attempt to create a less toxic, more effective alternative to carbon tetrachloride.
In the early 20th century, carbon tetrachloride was extensively used as a dry cleaning solvent, a refrigerant and as a fire extinguishing agent. In time, it was found carbon tetrachloride could lead to severe health effects. [7] From the mid-1960s Halon 1301 was the industry standard for protecting high-value assets from the threat of fire ...
Halon-based fire extinguishing system inside Diefenbunker, a nuclear fallout bunker in Canada. At high temperatures, halons decompose to release halogen atoms that combine readily with active hydrogen atoms, quenching flame propagation reactions even when adequate fuel, oxygen, and heat remain.
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