Tetrachloroauric(III) acid trihydrate, min. 99,9 %, p.a., ultra quality, Molar mass (M) 393,83 g/mol, Density (D) 3,9 g/cm³, CAS No. [16961-25-4], UN-Nr. 3260, EG-Nr. 605-557-9, Empirical formula HAuCl4 · 3 H2O