Carbonyl bromide

Carbonyl bromide, also known as bromophosgene, is an organic chemical compound with the chemical formula COBr2. It is a colorless liquid. It is a bromine analogue of phosgene. It is a carbon oxohalide. Carbonyl bromide is a decomposition product of halon compounds used in fire extinguishers.

Carbonyl bromide
Names
Preferred IUPAC name
Carbonyl dibromide
Other names
Bromophosgene, carbonic dibromide
Identifiers
3D model (JSmol)
ChemSpider
PubChem CID
UNII
  • InChI=1S/CBr2O/c2-1(3)4 Y
    Key: MOIPGXQKZSZOQX-UHFFFAOYSA-N Y
  • InChI=1/CBr2O/c2-1(3)4
    Key: MOIPGXQKZSZOQX-UHFFFAOYAM
SMILES
  • BrC(Br)=O
Properties
COBr2
Molar mass 187.818 g·mol−1
Appearance colorless liquid
Density 2.52 g/mL at 15 °C
Boiling point 64.5 °C (148.1 °F; 337.6 K) decomposes
reacts
Thermochemistry
61.8 J/(mol·K) (gas)
Std molar
entropy (S⦵298)
 309.1 J/(mol·K) (gas)
Std enthalpy of
formation (ΔfH⦵298)
 −127.2 or −145.2 kJ/mol (liquid)
−96.2 or −114 kJ/mol (gas)
Hazards
NFPA 704 (fire diamond)
4
0
1
Related compounds
Related compounds
 Carbonyl fluoride
Phosgene
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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