Formula: C7H6ClNO5S Formula weight: 251.65 Purity: 97% CAS Number: 21320-91-2 UN Number: UN3261 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2909.30 Hazard Statements: H314-H318 Causes severe skin burns and eye damage. Causes serious eye damage. …