E220

E220 is the European designation for sulfur dioxide, a chemical compound that is a gas at room temperature. It is produced industrially by burning sulfur or by heating certain metal sulfides. It is also a byproduct of some industrial processes.

Sulfur dioxide is used as a preservative in dried fruits, wines, and some processed foods. It prevents spoilage by inhibiting the growth of bacteria and fungi, and it also acts as an antioxidant to maintain color and flavor. It is often found in pre-packaged fruits and vegetables, cookies, and wholesome snacks.

Sulfur dioxide and sulfites are permitted food additives in the U.S. and are generally recognized as safe (GRAS) by the FDA when used for their intended purpose. However, some individuals, particularly those with asthma, may be sensitive to sulfites and experience allergic-type reactions. Regulatory bodies like JECFA and EFSA have evaluated sulfites, and they are widely used globally. Evidence does not suggest adverse health effects for the general population at typical intake levels.