StacksVerified U.S. regulatory reference

21 CFR §172.190

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The food additive THBP (2,4,5-trihydroxybutyrophenone) may be safely used in food in accordance with the following prescribed conditions:
  1. (a)The food additive has a melting point of 149 °C-153 °C.
  2. (b)It is used as an antioxidant alone or in combination with other permitted antioxidants.
  3. (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.