SYNTHESIS OF PHOSGENE BY MISCELLANEOUS METHODS

A small quantity of phosgene was obtained when soda (probably a mixture of sodium carbonate and sodium hydrogen carbonate) was heated with phosphorus(V) chloride [850a]. 

The reaction of hydrogen chloride with iV,Af -carbonyldiimidazole at -63 C gave phosgene in a yield of about 50% [1589b]. 

Ultra-violet irradiation of polychloropinene in moist soil produces CO, COj and HCl, along with some phosgene (a somewhat surprising result, since moist soil catalyses the hydrolysis of phosgene. Section 9.10.3.1) [1862]. 

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