Calcium sulphite
What is Calcium sulphite?
Calcium sulphite is an inorganic salt. It is produced by reacting calcium hydroxide with sulphur dioxide. It appears as a white powder.
Is Calcium sulphite vegan?
Calcium sulphite is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.
Is Calcium sulphite a major allergen?
Sulphur dioxide and sulphites are among the 14 major allergens that must be declared on UK food labels if present at concentrations above 10 mg/kg or 10 mg/litre.
What is Calcium sulphite used for?
Calcium sulphite is used as a preservative and antioxidant in some foods, particularly in dried fruits and processed vegetables.
Is Calcium sulphite safe?
Calcium sulphite is authorised as a food additive in Great Britain and is listed on the Register of Food Additive Authorisations.
Why it's used
Calcium sulphite is used as a preservative and antioxidant in some foods, particularly in dried fruits and processed vegetables. It helps to prevent browning and spoilage, extending the shelf life of these products.
Health notes
Calcium sulphite is authorised as a food additive in Great Britain and is listed on the Register of Food Additive Authorisations. It is evaluated by EFSA, which has established acceptable intake levels. Like other sulphites, it can cause allergic-type reactions in sensitive individuals, particularly those with asthma. These reactions can include breathing difficulties, hives, and swelling.
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 on UK food labels if present at concentrations above 10 mg/kg or 10 mg/litre. Therefore, calcium sulphite requires labelling if these thresholds are met.
Foods that contain Calcium sulphite
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