Purity: 99.95% (metals basis) CAS Number: 7440-23-5 UN Number: UN1428 Hazard Class: 4.3 Packing Group: I Harmonized Tariff Code:  2805.11 Hazard Statements: H260-H314 In contact with water releases flammable gases which may ignite spontaneously. Causes severe skin burns and eye…