Butylated hydroxytoluene (BHT)

Butylated hydroxytoluene (BHT) is a synthetic antioxidant that is commonly used as a food additive. It is also employed in various industries for its antioxidant properties. Here are some key points about butylated hydroxytoluene:

1. Chemical Structure: BHT is a derivative of phenol. Its chemical structure includes a tert-butyl group substituted on a methyl group of a methylated derivative of p-cresol. The chemical formula is �15�24�C15​H24​O.
2. Antioxidant Properties: BHT is known for its ability to prevent or slow down the oxidation of substances, particularly in fats and oils. Oxidation reactions can lead to the deterioration of the quality of food products and other materials.
3. Uses:
   • Food Additive: BHT is commonly used as a food preservative to prevent the oxidation of fats and oils in processed foods. It helps extend the shelf life of products by inhibiting the development of rancidity and off-flavors.
   • Cosmetics: BHT is used in some cosmetic and personal care products to prevent the oxidation of oils and maintain the stability of formulations.
   • Industrial Applications: BHT is also used in various industrial applications, including in rubber and petroleum products, to prevent degradation caused by oxidation.
4. Safety Considerations:
   • BHT is generally recognized as safe (GRAS) when used in accordance with approved levels in food products. Regulatory agencies, such as the U.S. Food and Drug Administration (FDA), have established specific limits on its use in food.
   • While BHT is considered safe for most people in the amounts typically found in food and cosmetic products, there have been some studies raising questions about potential health concerns. However, the overall safety profile is still subject to ongoing research.