Producing Sodium cyanide (NaCN)

NaCN: Sodium cyanide

for nylon via adiponitrile

Heat calcite.

CaCO3 CaO + CO3

Heat CaO with coke.

CaO + 3C CaC2 + CO

React calcium carbide with nitrogen in high temperature,

CaC2 + N2 CaCN2 + C

and react with sodium carbonate after that.

CaCN2 + C + Na2CO3 2NaCN + CaCO3