Sodium Metabisulfite
Sodium metabisulfite is a salt of sulfurous acid, white or slightly yellowish crystalline powder with sharp smell of sulfur dioxide.
FormulaHighly soluble in water, in solution shows reducing and preservative properties.
Na₂S₂O₅Application
food additive (E223), used as preservative, antioxidant and bleaching agent: in production of dried fruits, wines, juices, beer, marinades, to prevent oxidation and darkening of products.