Potassium cyanide

Potassium cyanide (KCN), also referenced by MeSH ID D011190 and commercially known under names including Feratox, is an inorganic salt composed of potassium and cyanide ions. It is classified under Salts & Minerals and is subject to strict regulatory controls across European markets due to its acute toxicity profile.

In mining and metals processing, potassium cyanide serves as the primary lixiviant in gold and silver extraction, forming soluble metal-cyanide complexes that allow precious metals to be separated from ore. In electronics manufacturing, it functions as an electrolyte in electroplating baths, where it modifies surface chemistry to deposit uniform metal coatings on substrates.

Potassium cyanide is supplied under REACH regulation and requires authorisation under Annex XIV due to its classification as a substance of very high concern. Procurement requires verified end-use documentation and compliance with EU CLP hazard communication standards. Packaging and handling specifications conform to ADR transport regulations for toxic substances.