Carbonyl bromide

Carbonyl bromide^[1]
Structural formula of carbonyl bromide	Ball-and-stick model of carbonyl bromide
Names
	Other names Bromophosgene, carbonic dibromide, carbonyl dibromide
Identifiers
CAS Number	593-95-3 =;
3D model (JSmol)	Interactive image;
ChemSpider	71389 ;
PubChem CID	79057;
CompTox Dashboard (EPA)	DTXSID20208041 ;
	InChI InChI=1S/CBr2O/c2-1(3)4 Key: MOIPGXQKZSZOQX-UHFFFAOYSA-N ; InChI=1/CBr2O/c2-1(3)4 Key: MOIPGXQKZSZOQX-UHFFFAOYAM;
	SMILES BrC(Br)=O;
Properties
Chemical formula	COBr2
Molar mass	187.818 g/mol
Appearance	colorless liquid
Density	2.52 g/ml at 15°C
Boiling point	64.5°C
Solubility in water	reacts with water
Thermochemistry
Heat capacity (C)	61.8 J·mol-1·K-1 (gas)
Std molar; entropy (S⦵298)	309.1 J·mol-1·K-1 (gas)
Std enthalpy of; formation (ΔfH⦵298)	-127.2 kJ·mol-1 (liquid) ; -96.2 kJ·mol-1 (gas)
Hazards
NFPA 704 (fire diamond)	4 0 1
Related compounds
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Carbonyl bromide, also known as bromophosgene by analogy to phosgene, is an organic chemical compound. It is a decomposition product of halon compounds used in fire extinguishers.^[2]

Reactions

Carbonyl bromide is formed when carbon tetrabromide is melted and concentrated sulfuric acid is added. Even at low temperatures, carbonyl bromide decomposes to carbon monoxide and elemental bromine.^[3]

^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 3–96, 4–50, 5–26, ISBN 0-8493-0594-2
^ US Occupational Safety and Health Administration (May 1996). "Common Fire Extinguishing Agents". Retrieved 2009-11-21.
^ Katrizsky, Alan R.; Meth-Cohn, Otto; Wees, Charles W. (1995), Organic Functional Group Transformations, vol. 6, Elsevier, pp. 417–8, ISBN 978-0-08-042704-1, retrieved 2009-11-23

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