GETTING MY POTASSIUM CYANIDE USED FOR TO WORK

Potassium cyanide (KCN) was a crucial source of alkali metallic cyanides before the invention of the Castner method. It had been produced by the decomposition of potassium ferrocyanide. The reaction is as follows:KCN is used to be a photographic fixer during the wet plate collodion system.The KCN dissolves silver where it has not been made insol