21 C.F.R. § 184.1307b Ferrous carbonate.
Title 21 - Food and Drugs
(a) Ferrous carbonate (iron (II) carbonate, FeCO3, CAS Reg. No. 563–71–3) is an odorless, white solid prepared by treating solutions of iron (II) salts with alkali carbonate salts. (b) The Food and Drug Administration is developing food-grade specifications for ferrous carbonate 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 nutrient supplement as defined in §170.3(o)(20) of this chapter, with no limitation other than current good manufacturing practice. The ingredient may also be used in infant formula in accordance with section 412(g) of the Federal Foods, Drug, and Cosmetic Act (the act) (21 U.S.C. 350a(g)) or with regulations promulgated under section 412(a)(2) of the act (21 U.S.C. 350a(a)(2)). (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
§ 184.1307b Ferrous carbonate.

