Rubidium sulphate, ROTI®METIC 99,8 % (2N8), Molar mass (M) 267 g/mol, Density (D) 3,613 g/cm³, Boiling point (bp) 1700 °C, CAS No. [7488-54-2], EG-Nr. 231-301-7, Empirical formula Rb2SO4