Last reviewed May 2026 · 1 min read
Is Sulphur Dioxide (E220) vegan?
Also known as: E220, Sulfur dioxide, Sulphites, Sulfurous anhydride
E-number: E220
Vegan
Suitable for a vegan diet.
Yes — Sulphur dioxide is a simple inorganic compound produced by burning sulfur or through other chemical means.
01 · The basics
What is Sulphur Dioxide (E220)?
A chemical compound used as a preservative and antioxidant in foods and beverages, particularly effective at preventing browning and inhibiting microbial growth.
02 · The source
Where it comes from
Sulphur dioxide is a simple inorganic compound produced by burning sulfur or through other chemical means. These are mineral and chemical processes that do not involve animals.
Frequently asked
FAQ
Is E220 (Sulphur Dioxide) vegan?
Yes, sulphur dioxide is vegan. It's a simple chemical compound produced from mineral sources and synthetic methods, with no animal involvement.
Why does wine contain sulphites/sulphur dioxide?
Sulphur dioxide, a type of sulphite, is added to wine as an antioxidant and preservative. It prevents spoilage from bacteria and yeast and protects the wine's flavor and color from oxidation.
Are sulphites bad for you?
For most people, sulphites are harmless in the small quantities used in food. However, they are a known allergen and can trigger asthma and allergy-like reactions in sensitive individuals, which is why their presence must be declared on labels.
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