CAS 25013-16-5 Butylated Hydroxyanisole (BHA) Antioxidant Food And Feed Additives Product Description BHA (Butylated Hydroxyanisole) — Description Butylated Hydroxyanisole (BHA) is a synthetic antioxidant used to inhibit oxidation in fats, oils, and other oxidation-prone products. It is commonly supplied as a mixture of 2- and 3-tert-butyl-4-hydroxyanisole isomers and is widely used in food and industrial formulations to help extend shelf life and maintain product quality.