What is E220? Sulphur Dioxide Explained
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E220 is 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 E220 (Sulphur 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.
Where is E220 found?
E220 (Sulphur Dioxide) is found in bread and baked goods, wine and cider, cured meats, cheese, pickles and condiments, soft drinks.
- bread and baked goods
- wine and cider
- cured meats
- cheese
- pickles and condiments
- soft drinks
Also known as: Sulfites · Sulfur Dioxide · Sulphites · Sulphur Dioxide
Is E220 safe?
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.
Check the calorie content of foods containing E220. If you’re pregnant, see our pregnancy food safety guide. Taking supplements? Check drug and supplement interactions.
Cleaner alternatives to E220
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MORiSH Pork Chicharrónes
Prefer snacks with no artificial colours, preservatives or sweeteners? MORiSH pork chicharrónes are 79% protein, zero carbs and have a short, readable ingredient list.
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E220 FAQs
What is E220 in food?
E220 is 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.
Is E220 safe to eat?
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 E220 vegan?
E220 (Sulphur Dioxide) is vegan. It is derived from synthetic, with no animal involvement in standard food production.
Is E220 halal?
E220 (Sulphur Dioxide) is halal. It is derived from synthetic, which involves no haram sources.
Related Preservatives additives
Also check: safe for cats? · safe for dogs? · calorie checker · medication interactions
Data: Open Food Facts (ODbL) · EFSA