CAS Number: 7681-57-4

E-Number: E223

EC Number: ---

Mol. Formula: Na2S2O5

Pack Sizes


25 Kilo Plastic Bag Options

Overview: What is Sodium Metabisulphite?

Sodium Metabisulphite (Also known as Sodium Pyrosulphite) is an inorganic compound with a chemical formula Na2S2O5. It is manufactured by treating Sodium Hydroxide solutions with sulphur dioxide. This creates a yellow solid that is treated further with SO2, it is dissolved into a white to colourless solid.

You can find Sodium Metabisulphite as a common disinfectant, antioxidant and preservative in countless products. Examples of this include within the food, pharmaceutical and industrial applications.

Food and Beverage companies use this product as a preservative in fruit for transport and storage, in jams, wines and many other beverage, and even as a reducing agent in baked goods. Pharmaceutical manufacturers commonly use Sodium Metabisulphite as an excipient in medications, such as epinephrine, paracetamol, anaesthetics and beyond. Finally industrial companies use the same item as a chlorine quencher in water treatment and a fungicide in shipping various products.

Sodium Metabisulphite at Kilo Ltd.

Here at Kilo we stock Sodium Metabisulphite on site for our customers in order to provide quality products throughout the UK and Ireland. The company that manufactures our Sodium Metabisulphite are accredited and vetted to make sure we supply the best product here and with all of our other items available here at Kilo.

Should you require specifications, MSDSs, further information, pricing and the like, please feel free to get in touch today. You can click on any of the buttons on our page or visit our contact page.

Industry Applications

Foods | Jams, Fruits, Baking
Beverages | Wines, Ciders, Beers
Cosmetics | Paracetomol, Anaesthetics, Epinepherine
Industrial | Antifreeze, Coolant, Artificial Smoke/Fog


This information is provided as a guide and is by no means legally binding. Suggestions on dosage rates, specific applications and anything else related to detailed quality information can be provided by our quality team or requested directly to our manufacturer.