Ingredient · E220, E202

Sulfur Dioxide And Potassium Sorbate

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Source
Not animal-derived
Allergen
No
Role in food
Sulfur dioxide and potassium sorbate are used as preservatives in foods. They help prevent …

What it is

Sulfur dioxide is a gas that occurs naturally in small amounts. It is often produced industrially by burning sulfur. Potassium sorbate is a salt of sorbic acid, a naturally occurring compound.

Why it's used

Sulfur dioxide and potassium sorbate are used as preservatives in foods. They help prevent spoilage by inhibiting the growth of mold, yeast, and bacteria. They are commonly found in dried fruits, wines, and baked goods.

Health notes

Sulfur dioxide is generally recognized as safe (GRAS) by the FDA when used as a preservative. It can cause allergic-type reactions in some sensitive individuals, particularly those with asthma. JECFA and EFSA have evaluated sulfur dioxide and potassium sorbate and established acceptable daily intake levels. Evidence regarding adverse effects at typical consumption levels is mixed.

Allergen info

Neither sulfur dioxide nor potassium sorbate are derived from any of the 9 FDA major allergens. They do not contain gluten.

Products containing Sulfur Dioxide And Potassium Sorbate

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.