Bromodifluoromethane

Bromodifluoromethane or Halon 1201 or FC-22B1 is a gaseous trihalomethane or a hydrobromofluorocarbon.

Bromodifluoromethane

Names
Preferred IUPAC name Bromo(difluoro)methane
Other names Bromodifluoromethane Difluorobromomethane Halon 1201 HBFC-22B1 FC-22B1 R-22B1 FM-100
Identifiers
CAS Number	1511-62-2 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	56193 Y
ECHA InfoCard	100.014.681
EC Number	216-149-1
PubChem CID	62407
UNII	L1F4C2FIBR Y
CompTox Dashboard (EPA)	DTXSID5061740
InChI InChI=1S/CHBrF2/c2-1(3)4/h1H Y Key: GRCDJFHYVYUNHM-UHFFFAOYSA-N Y InChI=1/CHBrF2/c2-1(3)4/h1H
SMILES C(F)(F)Br BrC(F)F
Properties
Chemical formula	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)
Solubility in water	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). Y verify (what is YN ?) Infobox references

Synthesis

It can be prepared through the reaction of hydrogen and dibromodifluoromethane at temperature in range 400–600 °C.^[1]

Critical point data: T_c = 138.83 °C (411.98 K); p_c = 5.2 MPa (51.32 bar); V_c = 0.275 dm³·mol⁻¹.

Applications

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, and a greenhouse gas with global warming potential over 100 years of 398, which is nonetheless much smaller than other fluorinated gases due to its relatively short atmospheric lifetime of 5.2 years.^[2] It was banned by the Montreal Protocol in 1996.