CAS Registry Number

CAS 16961-25-4 — Tetrachloroaurate (III) acid trihydrate

Tetrachloroaurate(III) acid trihydrate is a gold(III) chloride complex dissolved in hydrochloric acid, commonly used as a precursor in gold plating, nanotechnology, and catalytic applications. This high-purity reagent features a CAS number of 16961-25-4, molecular formula AuCl₄H·3H₂O, and a molecular weight of 339.786 g/mol. It is stable at ambient storage conditions with no signal word for hazard classification. Molekula supplies Tetrachloroaurate(III) acid trihydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.