Selenium pellets, ROTI®METIC 99,999 % (5N), Molar mass (M) 78,96 g/mol, Density (D) 4,809 g/cm³, Boiling point (bp) 685 °C, CAS No. [7782-49-2], UN-Nr. 3288, EG-Nr. 231-957-4, Empirical formula Se