Abstract
A sensitive spot test is described for the detection of benzyl cyanide on the basis of Zimmermann reaction. With aid of this test benzyl cyanide can be detected in the presence of benzyl chloride. Another spot test of benzyl cyanide is based on the nitration of this compound yielded p-nitrobenzyl cyanide, which is an acidbase indicator. When warmed with potassium cyanide, benzyl chloride forms benzyl cyanide, which can be detected by Zimmermann reaction. The reaction may be employed for selective tests, e.g., for the detection of benzyl chloride in the presence of chlorobenzene or benzal chloride. If benzyl chloride is nitrated the product yielded gives the Zimmermann reaction, this is different from benzal chloride. A new test for benzal chloride is worked out based on the reaction with phenylhydrazine and potassium bromate. By means of this test benzal chloride can be detected in the presence of benzyl chloride.
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