Synthesis of cyanogen chloride

Preparation of cyanogen chloride

Cyanogen chloride, similarly to cyanogen bromide, is prepared by the action of chlorine on potassium cyanide.

Preparation of cyanogen chloride

Preparation of cyanogen chloride

To the round bottom flask fitted with dropping funnel, gas inlet tube for chlorine gas 100 ml of a solution of chlorine saturated at 0° C are placed. The flask is cooled and a cold solution of potassium cyanide is added slowly from dropping funnel until the yellow color of the chlorine disappears. The reaction mixture is again saturated with chlorine and further cold solution of potassium cyanide is added slowly. An excess of potassium cyanide should be avoided as it could cause decomposition of the cyanogen chloride. The reaction product is collected from the aqueous solution by gently heating to 6o-70° C. Cyanogen chloride is a colorless, very volatile liquid, which boils at 12.5° C. and solidifies at — 6.5° C.

The war gases chemistry and analysis, by M. Sartory, 188, 1939


carbononitridic chloride



InChI Key


Canonical SMILES


MeSH Synonyms

cyanogen chloride

Depositor-Supplied Synonyms

CYANOGEN CHLORIDE, Chlorine cyanide, Chlorocyanide, Chlorocyanogen, Chlorcyan, Chlorocyan, Cyanogen chloride ((CN)Cl), Cyanic chloride, Chlorine cyanide (ClCN), RCRA waste number P033, Chlorure de cyanogene, Caswell No. 267, carbononitridic chloride, 506-77-4, RCRA waste no. P033, Chlorine cyanide, inhibited, Cyanogen chloride, inhibited, HSDB 917, Chlorure de cyanogene [French], QPJDMGCKMHUXFD-UHFFFAOYSA-N, EINECS 208-052-8, UN1589, EPA Pesticide Chemical Code 025801, BRN 0969190, CK, cyanicchlorid, Cyanochloride, Cyanogenchloride, ClCN, CNCl, Cyanic chloride #, Chlorocyanide (ClCN), Cyanochloride (CNCll), AC1L1VAA, Cyanogen chloride (ClCN), AC1Q3G1V, UN 1589 (Salt/Mix), UNII-697I61NSA0, 697I61NSA0, LS-148, AKOS006273211, AN-45427, FT-0632305, FT-0645064, 4-03-00-00090 (Beilstein Handbook Reference), I14-6760, Cyanogen chloride, inhibited [UN1589] [Poison gas], Cyanogen chloride, inhibited [UN1589] [Poison gas]

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