Tellurium(IV) oxide, ROTI®METIC 99,999 % (5N), Molar mass (M) 159,61 g/mol, Density (D) 5,9 g/cm³, Boiling point (bp) 1245 °C, CAS No. [7446-07-3], UN-Nr. 3077, EG-Nr. 231-193-1, Empirical formula TeO2