Synonym(s): 2-Hydroxy-5-sulfobenzoic acid dihydrate Formula: C7H6O6S 2H2O Formula weight: 254.22 (218.19anhy) Purity: 99+% CAS Number: 5965-83-3 UN Number: UN2585 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2918.29 Hazard Statements: H314-H318-H302 …