Chemical name: Gold(III) chloride trihydrate Chemical synonyms: Hydrogen tetrachloroaurate(III); Tetrachloroauric(III) acid Material form: Solid Density (g/cm3): 3.9 Molecular weight: 393.83 Molecular formula: HAuCl4 · 3H2O Chemical purity: =49.0% Au basis UN Number: UN 3260