Sodium Sulfite

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Related to Sodium sulphite: sodium sulphate, Sodium bisulfite, Sodium sulphide

sodium sulfite

[′sōd·ē·əm ′səl‚fīt]
(inorganic chemistry)
Na2SO3 White, water-soluble, crystals with a sulfurous, salty taste; decomposes when heated; used as a chemical intermediate and food preservative, in medicine and paper manufacturing, and for dyes and photographic developing.

Sodium Sulfite

 

Na2SO3, a salt; colorless crystals. Density, 2.63 g/cm3. Solubility in water, 20.82 percent at 19.9°C and 21.70 percent at 99°C. At ordinary temperatures Na2SO3.7H2O crystallizes from aqueous solutions.

Sodium sulfite is a strong reducing agent and oxidizes readily in aqueous solutions upon exposure to air. Upon heating in aqueous solutions, Na2SO3 adds sulfur, with the formation of sodium thiosulfate. Sodium sulfate is obtained by the reaction of solutions of Na2CO3 and SO2. It is a component of photographic developers.

References in periodicals archive ?
GENERAL SODIUM SULPHITE DESCRIPTION, COMPOSITION, INFORMATION ON INGREDIENTS, HAZARDS IDENTIFICATION, HANDLING AND STORAGE, TOXICOLOGICAL & ECOLOGICAL INFORMATION, TRANSPORT INFORMATION
It produces nickel, copper, cobalt, rare and precious metals and also some chemical products such as sulphuric acid, caustic soda, liquid chlorine, hydrochloric acid and sodium sulphite, together with some further processed nonferrous metals products.
Tenders are invited for Supply Of Sodium Sulphite Anhydrous
Expression of interest for Provision of Sodium Sulphite Anhydrous, Technical Grade
Limited Tenders are invited for Supply Of Sodium Sulphite At Augps
Tenders are invited for Outsourcing Of Contract Labours (Un-Skilled) Per Day For Making Of Sodium Sulphite Solution As Per Annexure-I No.
Tenders are invited for supply of sodium sulphite, caustic soda flakes, sodium dithionite( sodium hydrosulphide), hydrazine hydrate(n2h4), lithium hydroxide monohydrate
Tenders are invited for Supply of chemicals : mandelic acid ar grade, barium chloride ar grade, sodium sulphite anhydrous, dimethyl glyoxime ar grade , antimony potassium tartarate ar grade, purity > 99.
Tenders are invited for Supply of ferric nitrate, barium chloride and sodium sulphite