Sodium Hydrosulfite 90 technical grade is widely used in the textile industry for reducing dyeing reduction cleaning printing and decolorization and as a bleaching of silk wool nylon and other fabrics It can also be used in organic synthesis such as dyes pharmaceuticals as a reducing agent or bleach Sodium Hydrosulfite is the most suitable bleaching agent for wood pulp paper Its used for chemical processing cleaners gas purification and environmental improvement Sales Specification Assay 9000 Min Appearance White crystalline powder Na2CO3 Sodium Carbonate 150 250 Na2S2O3 Sodium Thiosulfate 050 150 Na2S2O5 Sodium Metabisulfite 350 700 HCOONa Sodium Formate 150 250 Fe Iron 18 ppm Max Water Insoluble 010 Max Total other heavy metals 10 ppm Max Package 22046 LB Drum 612 drums per pallet DOT Transportation UNNA 1384 Proper Shipping Name Sodium Dithionite Hazard Class 42 Packing Group II