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Inorganic Salts

Sodium Metabisulfite, Food Grade

Also known as: Sodium pyrosulfiteDisodium disulfiteSodium metabisulphite

Fine white powder on a glass watch glass
Representative appearance — not a photo of this lot
  • CAS7681-57-4
  • EC231-673-0
  • Physical formPowder

Reducing sulfite salt used as a food preservative, bleaching agent and dechlorinating agent in water treatment.

Sodium metabisulfite is a sulfite salt with strong reducing and antimicrobial properties. It is used as a preservative (E223) in the food and beverage industry, as an oxidation inhibitor in winemaking, as a dechlorinating agent after disinfection in water treatment and as a bleaching auxiliary in textiles. In a humid environment it may release sulfur dioxide gas. The product is food grade.

Used in: Leather and TanningFood and BeverageWater and Wastewater Treatment

Hazard statements

  • H302Harmful if swallowed.
  • H318Causes serious eye damage.
  • H335May cause respiratory irritation.

Precautionary statements

  • P261Avoid breathing dust/fume/gas/mist/vapours/spray.
  • P280Wear protective gloves/protective clothing/eye protection/face protection.
  • P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P310Immediately call a POISON CENTER/doctor.
  • Safety data sheet (SDS)On request by email
  • Technical data sheet (TDS)On request by email
  • Certificate of analysis (CoA)On request by email

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Applications

Food preservative and antioxidant (E223) · Sulfiting in wine and fruit juice production · Dechlorination in water treatment · Textile and leather bleaching/reduction

Storage

Store in a cool, dry place, protected from moisture · Keep away from acids (SO2 gas may be released) · Keep in tightly closed packaging in a well-ventilated area

Packaging

Packed to your specification. Powders, crystals, flakes and granules are supplied in:

  • Stack of plain white woven sacks on a wooden pallet
    Bags
  • Filled white bulk bag on a wooden pallet
    Big bags

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Sodium Metabisulfite, Food Grade

CAS 7681-57-4 · Powder

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