Is Sulfur Dioxide Safe? E220 Explained
Sulfur Dioxide is E220 (Sulphur Dioxide) — a preservative and allergen — sulphites must be declared on labels when present at over 10mg/kg, and are the main food trigger for asthma.
What is Sulfur Dioxide?
E220 is Sulphur Dioxide, a food additive classified as a preservative that extend shelf life by preventing microbial growth. A preservative and allergen — sulphites must be declared on labels when present at over 10mg/kg, and are the main food trigger for asthma. You'll find it in bread and baked goods, wine and cider, cured meats and many other packaged foods. Sulphur Dioxide is one of the better-known food additives and appears regularly in label-reading guides and dietary discussions. Like every E-number, E220 has been authorised for use in food following an EFSA safety evaluation — though authorisation doesn't mean concern-free, as the safety section below explains.
Is Sulfur Dioxide bad for you?
E220 is authorised in the EU and UK but carries genuine concerns. E220 is a sulphite or sulphite-related additive — sulphites are declared allergens that can trigger asthma and respiratory reactions in sensitive people (estimated 5–10% of asthmatics). For most people consuming Sulphur Dioxide in typical quantities, health effects are unlikely — but the caution flag reflects either active scientific debate, mandatory warning labels, allergen status, or conditions attached to its authorisation.
EFSA opinion: Sulphur Dioxide — status Some concerns.
Foods containing Sulfur Dioxide
- bread and baked goods
- wine and cider
- cured meats
- cheese
- pickles and condiments
- soft drinks
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Related to Sulfur Dioxide
Products relevant to Sulfur Dioxide and your dietary choices
Additive-Free Foods
Products without preservatives — great for sensitive diets.
Clean-Label Food Guide
Guides to buying and cooking without preservatives.
Food Intolerance Test
Confirm which preservatives, if any, are affecting you.
Sulfur Dioxide FAQs
Is Sulfur Dioxide bad for you?
E220 is authorised in the EU and UK but carries genuine concerns. E220 is a sulphite or sulphite-related additive — sulphites are declared allergens that can trigger asthma and respiratory reactions i
Is Sulfur Dioxide vegan?
E220 (Sulphur Dioxide) is vegan. It is derived from synthetic, with no animal involvement in standard food production.
Is Sulfur Dioxide halal?
E220 (Sulphur Dioxide) is halal. It is derived from synthetic, which involves no haram sources.
Data: Open Food Facts (ODbL) · EFSA