21 C.F.R. § 184.1307 Ferric sulfate.
Title 21 - Food and Drugs
(a) Ferric sulfate (iron (III) sulfate, Fe2(SO4)3 CAS 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 Food and Drug Administration is developing food-grade specifications for ferric sulfate in cooperation with the National Academy of Sciences. In the interim, this 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]
Title 21: Food and Drugs
PART 184—DIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS SAFE
Subpart B—Listing of Specific Substances Affirmed as GRAS
§ 184.1307 Ferric sulfate.
