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Typical source

Synthetic/mineral

Plain-language explanation

Sulphur dioxide (E220) is a preservative that protects food from spoilage and discoloration, commonly used in dried fruits, wines, and some juices. It is a chemical compound produced from burning sulfur or as a byproduct of other industrial processes, not from animal or alcoholic sources. Because its origin is inorganic and it does not contain any animal-derived or haram components, it is universally considered halal by all major certification bodies.