Butylated hydroxyanisole (BHA) is an organic compound that is widely used as an antioxidant food additive. It is derived from anisole and is chemically known as 2-tert-butyl-4-methoxyphenol. BHA is a white or yellowish crystalline powder that is soluble in alcohol and slightly soluble in water.
## Introduction
BHA was first synthesized in the 1940s and has since been used as a food preservative and antioxidant. It is commonly added to food products such as meats, cereals, chewing gum, baked goods, and snack foods to prevent spoilage and extend their shelf life. BHA is also used in cosmetics, pharmaceuticals, and plastics as an antioxidant to prevent degradation from oxidation.
## Uses
BHA is primarily used as an antioxidant in the food industry to prevent the oxidation of fats, oils, and other lipids. It is effective in preventing the rancidity of fats and oils, which can cause off-flavors and odors in food products. BHA is also used as a preservative in food products, as it inhibits the growth of bacteria and molds that can cause spoilage.
BHA is also used in the cosmetic industry as an antioxidant to prevent the oxidation of oils and other ingredients in cosmetic formulations. It is commonly found in lipsticks, moisturizers, and other skin care products.
In the pharmaceutical industry, BHA is used as an antioxidant to prevent the degradation of drugs and to extend their shelf life. It is also used as a stabilizer in plastic and rubber products to prevent oxidation.
## Synthetic Route
BHA is synthesized by reacting p-cresol with isobutylene in the presence of sulfuric acid. The resulting product is then oxidized with potassium permanganate to form BHA.
## Factory and Wholesale Price
China is a leading manufacturer and supplier of BHA, with many factories producing the chemical in large quantities. The wholesale price of BHA varies depending on the quantity and the supplier, but it typically ranges from $2 to $5 per kilogram.
## Conclusion
Butylated hydroxyanisole is a widely used antioxidant and preservative in the food, cosmetic, and pharmaceutical industries. It is an effective means of preventing the oxidation of fats and oils, which can cause spoilage and off-flavors in food products. BHA is synthesized using a complex process and is available from many manufacturers in China at competitive prices.
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