Uses
Both AgCN and KAg(CN)2 have been used in silver-plating solutions since at least 1840 when the Elkington brothers patented their recipe for a silver-plating solution. A typical, traditional silver-plating solution would contain KAg(CN)2 15-40 gL−1, KCN 12-120 gL−1 and K2CO3 gL−1.
Read more about this topic: Silver Cyanide