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Carbonyl bromide

| publication-date = −96.2 or −114 kJ/mol (gas) | NFPA-H = 4 | NFPA-F = 0 | NFPA-R = 1 Phosgene

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

Synthesis and reactions

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. Increasing temperature, in order to increase the reaction rate, results in a shift of the chemical equilibrium towards the reactants (since ΔH

Carbonyl bromide slowly decomposes to carbon monoxide and elemental bromine even at low temperatures. | author-link = | author2-link = | author3-link = | publication-date = | access-date = 2009-11-23

References

References

  1. US Occupational Safety and Health Administration. (May 1996). "Common Fire Extinguishing Agents".
  2. (24 May 1996). "Phosgene: And Related Carbonyl Halides".
  3. (1997). "Carbonyl dibromide: A novel reagent for the synthesis of metal bromides and bromide oxides". Journal of the Chemical Society, Dalton Transactions.
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carbonyl-compounds oxobromides carbon-oxohalides
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