TBHQ (tertiary butylhydroquinone)
For TBHQ (tertiary butylhydroquinone), jurisdiction is US FDA (21 CFR 172–178); status is permitted; citation is 21 CFR 172.185; use conditions is antioxidant alone or in combination with BHA and/or BHT; total antioxidant content will not exceed 0.02 percent of the oil or fat content of the food; cas no. is 1948-33-0, recorded from its source on 2026-08-15.
- Additive
- TBHQ (tertiary butylhydroquinone)
- Jurisdiction
- US FDA (21 CFR 172–178) our reading
- Status
- permitted our reading
- Citation
- 21 CFR 172.185 our reading
- Use conditions
- antioxidant alone or in combination with BHA and/or BHT; total antioxidant content will not exceed 0.02 percent of the oil or fat content of the food
- CAS No.
- 1948-33-0 verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
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
— ecfr.gov, retrieved 2026-08-15
Source
- ecfr.govhttps://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-172/subpart-B