CAS Number: 9000-69-5

E-Number: E440

EC Number: 232-553-0

Mol. Formula: C6H8O6

Pack Sizes


5 and 25 Kilo Bag Option for Potassium Metabisulphite

Overview: What is Potassium Metabisulphite?

A white, crystalline powder with a pungent odour, Potassium Metabisulphite is a product with both powerful and focussed attributes. An antioxidant and chemical sterilizer, it is used in wineries, breweries and much more.

The manufacture of Potassium Metabisulphite occurs by treating Potassium Hydroxide with Sulphur Dioxide, creating the below reaction:

2SO2 + 2KOH = K2S2O5 + H2O

Evaporating the solution leaves crystals of Potassium Metabisulphite for resale. Further changes can occur if the heat reaches 190oC, decomposing Potassium Metabisulphite into Potassium Sulphite and Sulfur Dioxide.

In terms of applications, Potassium Metabisulphite has several uses. One of the more common options is as a wine additive and disinfectant. As an additive, it helps preserve the wine whilst protecting colour and taste. Additionally, equipment gets treated with the same product to disinfect products before use. Another industry of use is as a mould and fungi inhibitor. During the stabilizing stage in brewing techniques, Potassium Metabisulphite helps prevent the stabilizing from growing mould. However, another option is to boil the wort, kill these microorganisms. Finally, other applications include a preservative in lemon juice and pickles, bleaching coconut creams and industrially as a cotton dye, tinting etched iron and finally, precipitating gold.

Potassium Metabisulphite at Kilo Ltd.

As a leading supplier, Kilo works with countless customers, manufacturers & intermediate contacts. We aim to provide and ensure the sale of the best products at the most competitive price. With BRC Accreditation and in-depth vetting, we are a powerful addition to customers and a wide-ranging point for manufactures of products such as Potassium Metabisulphite. Whether a bag, a pallet, a container or more, we are on-hand to assist.

Should you need more information, prices or more on any product, Kilo is on hand to assist. Feel free to contact us using the links on this page, by email or by calling our sales team on 01384 293 222.

Industry Applications

Beverages | Wines, Cider, Beers, Lemon Juice
Industrial | Cotton, Metalworks, Gold Precipitation
Cosmetics | Coconut Cream

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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.