KEY WORDS: bromochlorodifluoromethane, bromotrifluoromethane, dichlorodifluoromethane, phosgene.
Since the 1950s, however, it has been replaced by less toxic halogenated compounds, mainly containing bromotrifluoromethane (C[F.sub.3]Br, Halon 1301) and bromochlorodifluoromethane (C[F.sub.2]BrCl, Halon 1211) (Bryan 1982).
The inhalation toxicity of pyrolysis products of bromochloromethane (C[F.sub.2]BrCl) and bromotrifluoromethane (C[F.sub.3]Br).