Potassium Metabisulphite

  • Potassium pyrosulphite
  • CAS 16731-55-8
  • Molar weight 222.312g/mol
  • Chemical formula K2O5S2

Potassium metabisulfite is a food preservative, which preserves the natural colour of food and protects food against bacteria. The winemaking industry uses it as an additive during the bottling process.

Available in:
  • Bag
  • Bulk
  • Drum
Potassium Metabisulphite
  • Potassium pyrosulphite
  • CAS 16731-55-8
  • Chemical formula K2O5S2
  • Molar weight 222.312g/mol

Product details of Potassium Metabisulphite

Potassium pyrosulphiteDipotassium disulfiteDipotassium disulphite
  • Food
  • Technical
  • Granular
  • Powder
  • White crystalline powder

Chemical formula


CAS number


Molar weight


Specific Gravity


Melting Point

190 °C


  • Dyeing
  • Food additive
  • Food preservative

Just-in-time delivery

Full global handling

Only top market suppliers

Can’t find the product you’re looking for?

Let us help tailor the perfect solution for your needs. Get in touch with our industry experts to discuss what Brenntag can do for your business.

We process your personal data to monitor our performance when responding to your requests. We will only share your personal information with third parties if there is a genuine need for it and we have your permission, or where the law allows this.