Iodine, min. 99.8 %, p.a., ACS, resublimated, Molar mass (M) 253,81 g/mol, Density (D) 4,93 g/cm³, Boiling point (bp) 184,4 °C, CAS No. [7553-56-2], UN-Nr. 3495, EG-Nr. 231-442-4, Empirical formula I2