Tetrachloroauric acid trihydrate

Tetrachloroauric acid trihydrate (CAS 16961-25-4), commonly known as chloroauric acid, is a gold-bearing inorganic acid; the primary commercial source of soluble gold in industrial and laboratory settings.

Where is Tetrachloroauric acid trihydrate used?

• Electronics: gold electroplating and electroless plating baths that deposit conductive gold layers on printed circuit boards, connectors, and semiconductor contacts
• Catalysts: preparation of supported gold nanoparticle catalysts, where precise gold loading on oxide supports determines activity in oxidation and hydrogenation reactions
• Mining and precious metals refining: reference standard and analytical reagent for gold assay and recovery process development
• Specialty chemicals: production of other gold compounds and colloidal gold dispersions for diagnostic and research applications
• It serves as a foundational reagent wherever controlled deposition, reduction, or catalytic activation of gold is required.

Good to know: Purity levels are commonly stated on a gold-content basis. Buyers should confirm gold assay, moisture content, and packaging integrity as standard sourcing criteria for this high-value chemical product.

Commercial specifications

• Purity levels commonly stated on a gold-content basis
• Buyers should confirm gold assay, moisture content, and packaging integrity