Phosgene compared with other war gases

Phosgene is said to be probably the most poisonous gas used in industry [1768]. However, there are many materials in common industrial practice that are significantly more poisonous than phosgene. The utility of phosgene (and of dichlorine) in the military chemical industry has been described in an early review [718], but recent books by Haber [859a], Richter [1711a] and Spiers [1928b] have now supplanted the earlier standard texts by Prentiss 

Methyl chloroforms te, C1C(0)0CH3, prepared from the action of phosgene on methanol, whilst not used alone, was used as a solvent for other toxic materials. Monochloromethyl chloroformate, ClC(0)OCHjCI, is more lachramatory than phosgene, and was compressed in grenades and bombs. The dichlorinated derivative, dichloromethyl 

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