Potassium Cyanide - Production

Production

KCN is produced by treating hydrogen cyanide with a 50% aqueous solution of potassium hydroxide, followed by evaporation of the solution in a vacuum:

HCN + KOH → KCN + H2O

or by treating formamide with potassium hydroxide:

HCONH2 + KOH → KCN + 2H2O

Approximately 50,000 tons of potassium cyanide are produced yearly.

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