Carbonyl bromide

Carbonyl bromide, also known as bromophosgene, is a carbon oxohalide and a bromine analogue of phosgene, with the chemical formula COBr2.

Carbonyl bromide is a decomposition product of halon compounds used in fire extinguishers.

[2] Carbonyl bromide is formed by the oxidation of carbon tetrabromide with sulfuric acid: In contrast to phosgene, carbonyl bromide cannot be produced efficiently by halogenation of carbon monoxide.

The bromination of carbon monoxide follows this equation: But the process is slow at room temperature.

[3][4][clarification needed] Carbonyl bromide slowly decomposes to carbon monoxide and elemental bromine even at low temperatures.

Structural formula of carbonyl bromide
Structural formula of carbonyl bromide
Ball-and-stick model of carbonyl bromide
Ball-and-stick model of carbonyl bromide
NFPA 704 four-colored diamond Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas Flammability 0: Will not burn. E.g. water Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium Special hazards (white): no code