potassium metabisulphate


A white crystalline powder with a pungent sulphur odour


Potassium Metabisulphate is a food preservative which preserves the natural colour of food and protects food against bacteria.


  • The winemaking industry uses Potassium Metabisulphate as an additive during the bottling process. When they add Potassium Metabisulphate to wine, a sulphur dioxide gas forms, which destroys microorganisms in the wine and prevents moulds and bacteria from growing inside the wine bottle.
  • Potassium Metabisulphate is sometimes used in the brewing industry to inhibit the growth of wild bacteria and fungi called 'stabilising'.
  • It is also used to neutralize chloramine that has been added to tap water at the source as a disinfectant and is used both by homebrewers and commercial brewers alike.


  • beverage
    • Alcoholic Beverages
  • industrial
    • Fertilisers
    • Leather
  • healthcare
    • Pharmaceutical products
  • food
    • Cereals
    • Flavours
    • Fruit preparations
    • Instant Food
    • Meat
    • Snacks
    • Sweet Spreads
    • Vegetables

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