Sodium bisulphite
What is Sodium bisulphite?
Sodium bisulphite is an inorganic salt, a chemical compound of sodium and bisulphite. It is typically produced by passing sulphur dioxide through a solution of sodium carbonate or sodium hydroxide. It is often used in its hydrated form.
Is Sodium bisulphite vegan?
Sodium bisulphite is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.
Is Sodium bisulphite a major allergen?
Sulphur dioxide and sulphites are among the 14 major allergens that must be declared if present at levels above 10 mg/kg or 10 mg/litre.
What is Sodium bisulphite used for?
Sodium bisulphite acts as a preservative and antioxidant in food.
Is Sodium bisulphite safe?
Sodium bisulphite is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations.
Why it's used
Sodium bisulphite acts as a preservative and antioxidant in food. It helps to prevent browning and spoilage by inhibiting the action of enzymes and oxygen. It is commonly found in dried fruits, processed potatoes, and some beverages.
Health notes
Sodium bisulphite is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations. It is evaluated by EFSA, which has established acceptable intake levels. It can cause allergic-type reactions in sensitive individuals, particularly those with asthma, though these are rare at typical consumption levels. JECFA has also evaluated it and set an acceptable daily intake.
Regulatory status
Authorised in Great Britain (FSA register): England, Scotland, Wales. FSA register of authorised products
Allergen info
Sulphur dioxide and sulphites are among the 14 major allergens that must be declared if present at levels above 10 mg/kg or 10 mg/litre. Sodium bisulphite is a source of sulphites.
Foods that contain Sodium bisulphite
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