Sodium cyanide is an important chemical raw material. Its main function in machinery is as quencher for various steels. It’s a main part of plating liquids for copper, gold, silver, cadmium, zinc, etc. In mining, it’s used to extract such cherish metals as gold, silver, etc. In chemical industry, it’s a raw material for producing plexiglass, various abio-cyanatries and hydrocyanic acid, acrylonitrile-butadiene rubber, synthetic fibre. In dyestuff industry, it’s used for producing cyanuric chloride (medium of active dyestuff and raw material of brightening agent). In pharmaceutical industry, it’s used for producing vitamin, lactic acid, caffeine, nophylline, monosodium glutamate (MSG), cyanoacetic acid methyl ester, malonic acid. In feedstuff, it’s used for producing amonophenol feedstuff additive. Sodium cyanide is used directly to produce sodium ferrocyanide, potassium cyanide, zinc cyanide, barium cyanide, cuprous cyanide, sodium thiocyanate, potassium thiocyanite, potassium ferricyanide, iron blue, methionine, and so on.