Applications
It is primarily used in pulp and paper industry. It is used as an oxygen scavenger agent , in the photographic industry to protect developer solutions from oxidation, in textile industry as a bleaching, as a desulfurizing and as a dechlorinating agent and in leather trade for the sulfitization of tanning extracts. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate. It is use in other applications include ore flotation, oil recovery, food preservative, making dyes, and detergent. It is mainly used in medicine, tannage and tanning.
Sodium Sulfite Food Grade
WC Code: 19-047-02
Sales Specification
Appearance: White Powder
Na2S2O3: 97.0% Min
Sodium Sulphate: 2.5% Max
Iron (Fe): 0.002% Max
Water Insoluble: 0.02% Max
Free Alkali (Na2CO3): 0.3% Max
As: 0.0002% Max
Heavy Metal (Pb): 0.001% Max
Packing
50 lb paper bag , 44 bags per pallet
