21 C.F.R. § 172.185 TBHQ.
Title 21 - Food and Drugs
The food additive TBHQ, which is the chemical 2-(1,1-dimethylethyl)-1,4-benzenediol (Chemical Abstracts Service Registry Number 1948–33–0), also known as tertiary butylhydroquinone, may be safely used in food in accordance with the following prescribed conditions: (a) The food additive has a melting point of 126.5 °C–128.5 °C. (b) It is used as an antioxidant alone or in combination with BHA and/or BHT. (c) The total antioxidant content of a food containing the additive will not exceed 0.02 percent of the oil or fat content of the food, including the essential (volatile) oil content of the food.
Title 21: Food and Drugs
PART 172—FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION
Subpart B—Food Preservatives
§ 172.185 TBHQ.
