Sodium Bisulphite

Sodium bisulphite is widely used in almost all commercial wines to prevent oxidation and preserve flavour. It is also used as a bleaching agent in the production and/or processing of paper, wool, cotton etc.


Molar Weight104.055 g/mol
Density1.310 – 1.370
FormsYellow, Liquid (clear), Pale

Uses and Applications

Key applications

  • Dyes
  • Photographic supplies
  • Wastewater treatment
  • Water treatment
  • Cleaning products
  • Fuel additive
  • Pulp and paper
  • Reducing agent
  • Bleaching agent


  • Pulp & Paper
  • Pharma
  • Oil & Gas
  • Coatings & Construction
  • Cosmetics
  • Water Treatment
  • Food
  • Rubber

Synonyms: E222, SBS, Sodium Hydrogen Sulfite, Sodium Pyrosulfite, Sodium Bisulfite, Sodium Bisulfite Solution, Sodium Bisulphite

Chemical Formula: NAHSO3

CAS Number: 7631-90-5