Purity: 99.5% (metals basis) CAS Number: 7782-49-2 UN Number: UN3077 Hazard Class: 9 Packing Group: III Harmonized Tariff Code:  2804.90 Hazard Statements: H301-H331-H373 Toxic if swallowed. Toxic if inhaled. May cause damage to organs through prolonged or repeated exposure. …