Is e928 vegan?

E928 is the European additive code for benzoyl peroxide, a chemical compound used primarily as a flour treatment and bleaching agent. It oxidizes carotenoid pigments to whiten freshly milled wheat flour and modifies gluten proteins to improve dough handling in commercial baking. Beyond packaged flours, bread mixes, and baked goods, it is sometimes employed in specialized dairy processing to bleach whey or milk fat.

This substance is manufactured entirely through synthetic chemical synthesis. Producers typically create benzoyl peroxide by reacting benzoyl chloride with hydrogen peroxide in an alkaline medium, utilizing base chemical precursors derived from petrochemical and mineral sources. No animal tissues, animal fats, or animal-derived processing aids are involved in its commercial production.

Because benzoyl peroxide is completely synthetic and produced without animal ingredients or byproducts, E928 is classified as vegan.