Chemistry:Bromodifluoromethane

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
EC Number	216-149-1
PubChem CID	62407
UNII	L1F4C2FIBR Y
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).
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Infobox references

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

Synthesis

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

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. It was banned by Montreal Protocol in 1996.

External links

• "Microwave Spectrum, Nuclear Quadrupole Coupling Constants, and Structure of Bromodifluoromethane". J Mol Spectrosc 185 (1): 147–52. September 1997. doi:10.1006/jmsp.1997.7381. PMID 9344805. Bibcode: 1997JMoSp.185..147O. 
• Cox R.A.; Simmons R.F. (1971). "The kinetics of the gas-phase thermal decomposition of bromodifluoromethane". J. Chem. Soc. B: 1625–31. doi:10.1039/J29710001625. http://www.rsc.org/publishing/journals/article.asp?doi=j29710001625. 
• Plyler E.K.; Acquista N. (January 1952). "Infrared Absorption Spectra of Five Halomethanes". Journal of Research of the National Bureau of Standards 48 (1): 92–7. doi:10.6028/jres.048.012. Research Paper 2290.