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Sodium Sulfite, Anhydrous, 98%
Product Code: SS1523A
Na2SO3
Synonyms: Disodium sulfite; Sodium Sulphite, Sulfurous acid, disodium salt; sulftech; sulfurous acid, sodium salt (1:2); Sodium sulfite (Na2SO3)
Grade: Technical
Uses: Paper industry; reducing agent; water treatment; photographic development; textile bleaching.
Sodium sulphite is an oxygen scavenger. It reacts with oxygen to form sodium sulphate and effectively lowers the dissolved oxygen content thereby protecting the insides of washing machines from rusting.
As an oxygen scavenger agent, it is used to treat water being fed to steam boilers to avoid corrosion problems,[4] in the photographic industry, it protects developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions
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Additional Description
CAS # [7757-83-7]Na2O3S
Additional uses include:
As a reducing agent it is used in the textile industry as a bleaching, desulfurizing, and dechlorinating agent (e.g. in swimming pools). Its reducing properties are exploited in its use as a preservative to prevent dried fruit from discoloring, and for preserving meats.
It is used as a reagent in sulfonation and sulfomethylation agent. Typical Analysis:
Na2SO3 = 98.59 %
Total Alkalinity (Na2CO3) = 0.35 %
Loss on ignition: 0.04 %
NaCl = 0.02 %
Iron (Fe) = 3.5 ppm