SODIUM BI SULPHITE 91.5% SPECIFICATIONS Sr._____CHARACTERISTICS____________SPECIFICATIONS 1___ Physical Appearance___________Creamish Crystalline Powder 2___ Assay as NaHSO3 %__________91.5% 3___ Assay as SO2% by mass_______60-62% Min. 4___ PH of 10% Solution___________3.9 to 5.0 5___ Iron Content ppm____________150 Max. 6___ Chloride content_____________600 PPM Max. 7___ Sodium Sulphate %__________7.8 Max. 8___ Heavy Metals (as pb)_________50 PPM Max. 9___ Thio Sulphate S2O3__________0.05% 10__ Sodium Sulphite_____________5% Max. 11__ Arsenic, ppm max____________NIL 12__ Selenium, ppm max.__________NIL 13__ Water insoluble______________0.05% Max. Uses : • Leather • Dye intermediates • Pollution Control • Metal Cleaning Packing : 25 / 50 kg HDPE Bags with liner Stuffing : 20 mt per 20’ FCL.