Diphenylcyanoarsine


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Diphenylcyanoarsine

 

diphenylarsenyl cyanide, (C6H5)2AsCN; colorless crystals. Melting point, 31.5°C; boiling point, 346°C; density, 1.3160 g/cm3 (52°C); index of refraction nD52, 1.6153. Insoluble in water but readily soluble in organic solvents. It is hydrolyzed rather rapidly by hot water, and it oxidizes comparatively readily. It is prepared mainly from diphenylchloroarsine (by an exchange reaction with sodium cyanide).

In the form of vapor or smoke, diphenylcyanoarsine strongly irritates the upper respiratory passages (unendurable concentration, 0.25 mg/m3). During World War I it was used by Germany as a poison under the code name Klark II.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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