Sodium metabisulfite or sodium pyrosulfite is an inorganic compound of chemical formula Na₂S₂O₅. The substance is sometimes referred to as disodium. It is used as a disinfectant, antioxidant and preservative agent

Molar Mass : 190.107 g/mol
Formula :

1.48 g/cm³

Melting Point :
150 °C

Soluble in : Water

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The structure of sodium Metabisulphate
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Sodium metabisulphite is marketed under the brand Birlasulf Sodium Metabisulphite (Birlasulf SM).Birlasulf SM is used as a preservative in the starch and food industry to control melanosis (black spot) in shrimp; for fermentation in the wine industry; as an antichlor in the chemical industry and as a redox catalyst in the acrylic fibre industry.The product is also used as a reducing agent in the purification of aldehydes and ketones; in the manufacture of sulphonated oil and resin; for detoxification of cyanide in gold ore processing plants and in the manufacture of photographic chemicals.Sodium metabisulphite is manufactured by Aditya Birla Chemicals (Thailand).Product specifications:Formula:Na2S2O5Synonyms