Potassium gold cyanide is a colorless to white crystalline powder industrially used as plating and surface treating agents.
Potassium gold cyanide is produced in the cyanide process variant of gold mining. The chemical reaction for the dissolution of gold is
4 Au + 8 KCN + O2 + 2 H2O → 4 KAu(CN)2 + 4 KOH
In this redox process via a two-step reaction, oxygen removes one electron from each gold atom to form the complex Au(CN)−2 ion.
Component in gold plating
Material used for photoreduction of gold ions by nanopowder ZnO, preparation of gold-gold junction electrodes in voltammetric glucose detection, and other reactions where metallic gold is prepared
Colorant in dyes, pigments, drugs, textiles, personal care products) food, and ink
Material used in the manufacture of televisions, radios, computers