Characteristic: Physical Appearance Assay as Na2SO3 Ph of 10% solution Clarity of 20% solution Iron content Chloride content Heavy metals Free Alkali Specification: White crystalline powder 92% min 9. 5 to 11.00 clear / slight hazy 50PPM max 100PPM max 15 PPM max. 0.15% max. Application: Oxygen scavenger , water treatment chemical, metal treatment chemicals, paper mills, detergent, Oil field chemical. Dye & intermediates, leather treatment, photograph, specialty chemicals, photography, agro industry.
