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| Section2 = | Section3 = | Section4 = }} Butylated hydroxyanisole (BHA) is an antioxidant consisting of a mixture of two isomeric organic compounds, 2-''tert''-butyl-4-hydroxyanisole and 3-''tert''-butyl-4-hydroxyanisole. It is prepared from 4-methoxyphenol and isobutylene. It is a waxy solid used as a food additive with the E number E320. The primary use for BHA is as an antioxidant and preservative in food, food packaging, animal feed, cosmetics, rubber, and petroleum products.〔(Hazardous Substances Database ), National Library of Medicine〕 BHA also is commonly used in medicines, such as isotretinoin, lovastatin, and simvastatin, among others. ==Antioxidant properties== Since 1947, BHA has been added to edible fats and fat-containing foods for its antioxidant properties as it prevents rancidification of food which creates objectionable odors. Like butylated hydroxytoluene (BHT), the conjugated aromatic ring of BHA is able to stabilize free radicals, sequestering them. By acting as free radical scavengers, further free radical reactions are prevented. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「butylated hydroxyanisole」の詳細全文を読む スポンサード リンク
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