Potassium silver cyanide

Potassium silver cyanide, also known as potassium dicyanoargentate or potassium dicyanoargentate(I), is an inorganic salt formed from silver, potassium, and cyanide ions. It is registered under CAS 506-61-6 and carries no assigned E-code, as it is strictly an industrial-grade compound.

In electroplating, it serves as the primary silver ion source in alkaline cyanide bath formulations, releasing Ag(I) ions at controlled rates to deposit uniform, adherent silver coatings onto metal substrates. It is also applied in the electronics sector to plate connectors and contacts, and in certain photographic and printing processes where precise silver deposition chemistry is required.

This compound is supplied in industrial grades compliant with REACH registration requirements applicable within the EU. It is classified as a substance of very high concern due to its cyanide content, requiring full SDS documentation and adherence to CLP hazard labelling. Packaging formats are confirmed at point of enquiry.