Butylated hydroxyanisole (BHA) is a synthetic antioxidant that is used to preserve the freshness and prolong the shelf life of foods, cosmetics, and other products. It is a white, waxy solid that is insoluble in water and has a mild, characteristic odor. BHA is often used in combination with other antioxidants, such as butylated hydroxytoluene (BHT), to provide a synergistic effect.
BHA is primarily used as a food additive to prevent oxidation and preserve the color, flavor, and texture of fats and oils in products such as meats, snack foods, and baked goods. It is also used in cosmetics and personal care products as an antioxidant and fragrance ingredient. In addition, BHA is used in the formulation of a variety of other products, such as rubber, adhesives, and petroleum products.
BHA is generally recognized as safe (GRAS) by the US Food and Drug Administration (FDA) for use in food at levels up to 0.02%. However, some studies have suggested that it may be a potential human carcinogen, and it is banned for use in food in some countries.