更多關于已證實屬于一般公認為安全（GRAS）的可直接加入食品中的物質種類，請點擊美國FDA 21 CFR 第184部分已證實屬于一般公認為安全（GRAS）的可直接加入食品中的物質種類匯總
§ 184.1307 Ferric sulfate.
（a） Ferric sulfate （iron （III） sulfate, Fe2（SO4）3CAS Reg. No. 10028–22–5） is a yellow substance that may be prepared by oxidizing iron （II） sulfate or by treating ferric oxide or ferric hydroxide with sulfuric acid.
（b） The ingredient must be of a purity suitable for its intended use.
（c） In accordance with §184.1（b）（1）, the ingredient is used in food as a flavoring agent as defined in §170.3（o）（12） of this chapter, with no limitation other than current good manufacturing practice.
（d） Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.
[53 FR 16865, May 12, 1988, as amended at 73 FR 8607, Feb. 14, 2008]
