Potassium cyanide (KCN) was an important source of alkali metallic cyanides before the invention of the Castner procedure. It was produced by the decomposition of potassium ferrocyanide. The response is as follows: As a result of cyanide anion's higher nucleophilicity, cyano groups are conveniently launched into organic and natural molecules https://is-potassium-cyanide-dead97642.daneblogger.com/29797473/potassium-cyanide-found-in-nature-for-dummies