What is sodium sulphite ?
is a soluble sodium salt of sulfurous acid (sulfite) with the chemical formula Na2SO3
Sodium sulfite is primarily used in the pulp and paper industry.
- in water treatment as an oxygen scavenger agent
- in the textile industry as a bleaching, desulfurizing
- In the leather trade as dechlorinating agent for the sulfitization of tanning extracts
- in chemical manufacturing as a sulfonation and sulfomethylation agent
|Physical Appearance||White Crystalline Powder|
|Assay as Na2SO3% by mass||98% Min.|
|PH of 10% Solution||9.5 – 11|
|Clearity of 10% Solution||Clear and Colourless|
|Insoluble Matter||0.05% Max.|
|Iron ( as Fe)||50ppm Max.|
|Heavy Metal ( as Pb)||15ppm Max.|
|Thiosulphate||200 ppm Max.|
|Free Alkali||0.1% Max.|