Photochemical or radiochemical decompositions

Chloroisocyanate, CINCO, in the presence of u.v. light, decomposes to give phosgene according to [805a]  

On irradiation of l,l-dichloro-2,2-bis(4-chlorophenyl)ethene at 300 nm in the presence of the double bond is cleaved into phosgene and 4,4 -dichlorobenzophenone. The dioxetane is considered to be a likely intermediate in the decomposition [1601a]  

Radiolysis ( Co y-irradiation) of CFCl CF jOCCI 3 results in the formation of phosgene as one of the products, according to the following reaction [2241a]  

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