Is sulphur dioxide e220 vegan?

Sulphur dioxide E220 is a chemical compound commonly known as sulfur dioxide, which functions as an antimicrobial preservative and antioxidant in food manufacturing. It is produced industrially by burning elemental sulfur or by roasting sulfide ores such as iron pyrite. The resulting gas is captured, purified, and either applied directly to foods or dissolved into liquids. This ingredient appears frequently in dried fruits, fruit juices, soft drinks, pickled goods, processed potato products, and alcoholic beverages like wine and cider, where it prevents enzymatic browning and inhibits the growth of unwanted microorganisms.

Sulphur dioxide E220 is vegan because it is derived entirely from mineral and synthetic origins. No animal tissues, animal byproducts, or animal-based processing aids are involved in its synthesis or refinement. Because its production relies exclusively on inorganic chemical processes, the presence of sulphur dioxide E220 does not compromise the vegan status of a food or beverage.