Formula : Na2SO3
Molecule Weight : 126.04
Description : White or slight yellow crystalline powder. Soluble in water and insolulbe in alcohol and most organic solvents. It will slowly absorbs oxygen from the air then become sulfate.
Specification : GB 9005-88
Purity 97% Min 96% Min
Water insoluble 0.02% Max 0.03% Max
Fe 0.003% Max 0.005% Max
Free Alkali 0.1% Max 0.40% Max
Sulphate 2.5% Max 2.5% Max
As 0.002% Max ------
Pb 0.002% Max -----
Uses : Used in pulp and paper industry, especially for chemi-thermo mechanical pulping, water treatment, photography,
food preservative, textile bleaching, oil recovery etc.
Package : in 25 kgs PE plus PP bags.