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Is Sodium Hydrogen Sulphite vegan?

Sodium Hydrogen Sulphite

Vegan

Sodium hydrogen sulphite (sodium bisulphite) is an inorganic sulphite compound used as a preservative, antioxidant, and reducing agent in food and beverage products. It prevents browning and microbial spoilage.

Also known as Sodium bisulfite, Sodium bisulphite, Sodium hydrogen sulfite
E number E222
Last reviewed 22 April 2026

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.