§ 172.185 TBHQ.
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.
更多关于美国 FDA 已批准的直接用于人类食品的添加剂种类法规，请点击美国FDA 21 CFR 第172部分已批准的直接用于人类食品的添加剂种类汇总
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