di Sodium disulphite - AR

Di-sodium sulphite

SPECIFICATION:

• Other names: sodium metabisulfite; sodium pyrosulphite; disodium disulphite; Pyrosulphurous acid, disodium salt
• CAS No: 7681–57–4
• EC No: 231–673–0
• Formula: Na₂S₂O₅
• Appearance: white solid
• Odour: sulphurous
• Molar Mass: 190.11
• Density: 1.48 g/cm³
• Solubility: Easily soluble in cold water. (470 g/l at 20C)
• pH: 3.5 to 5 [Acidic.]

USES FOR SODIUM METABISULPHITE

• As a sanitiser for equipment in wine making and breweries.
• Water treatment for removal of Chloramines.
• Cleaning and disinfecting desalination systems and reverse osmosis membranes.
• Removal of tree stumps by degradation of lignin.
• For use in the photographic industry
• As a reducing agent in the extraction of gold from aqua regia

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• Reduced to Clear

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