Bromodifluoromethane or Halon 1201 or FC-22B1 is a gaseous trihalomethane or a hydrobromofluorocarbon.
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Preferred IUPAC name
Bromo(difluoro)methane | |
Other names
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ECHA InfoCard | 100.014.681 |
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CompTox Dashboard (EPA)
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Properties | |
CHBrF2 | |
Molar mass | 130.92 g/mol |
Appearance | Gas |
Density | 1.55 g/cm3 at 16 °C |
Melting point | −145 °C (−229 °F; 128 K) |
Boiling point | −14.6 °C (5.7 °F; 258.5 K) |
Insoluble | |
Solubility | Alcohol, diethyl ether |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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It can be prepared through the reaction of hydrogen and dibromodifluoromethane at temperature in range 400–600 °C.[1]
Critical point data: Tc = 138.83 °C (411.98 K); pc = 5.2 MPa (51.32 bar); Vc = 0.275 dm3·mol−1.
Bromodifluoromethane was used as a refrigerant and in fire extinguishers. It is a class I ozone depleting substance with ozone depletion potential ODP = 0.74. It was banned by Montreal Protocol in 1996.