Tert-butylhydroquinone

Tert-Butylhydroquinone (TBHQ) is a type of aromatic organic compound that is often used as a food additive. It is a derivative of hydroquinone, substituted with a tert-butyl group.

Chemical Structure and Properties

TBHQ is a white, crystalline substance with a faint, characteristic odor. It is soluble in alcohol and ether, and practically insoluble in water. The chemical formula for TBHQ is C10H14O2, and its molecular weight is 166.22 g/mol. It has a melting point of 126.5-128.5 °C and a boiling point of 264-270 °C.

Uses

TBHQ is primarily used as a food additive due to its antioxidant properties. It helps to extend the shelf life of foods by preventing the oxidation of fats and oils. It is commonly found in a variety of processed foods, including crackers, microwave popcorn, and fast food.

In addition to its use in the food industry, TBHQ is also used in the production of varnish, lacquer, and resin. It acts as a stabilizer, preventing these products from drying out and cracking.

Health Effects

While TBHQ is generally recognized as safe by the Food and Drug Administration (FDA), there are some potential health concerns associated with its consumption. High doses of TBHQ can cause nausea, vomiting, and ringing in the ears (tinnitus). Long-term exposure to high levels of TBHQ may also lead to neurological damage, liver enlargement, and increased risk of tumors.

Regulation

In the United States, the FDA regulates the use of TBHQ in food. The maximum allowable concentration of TBHQ in food is 0.02% of the oil or fat content.

See Also

• Food additive
• Antioxidant
• Hydroquinone
• Tert-butyl