…om the uses established in this section do not exist or have been waived. 45 FR 22915 , Apr. 4, 1980, as amended at 49 FR 5612 , Feb. 14, 1984] § 184.1296 Ferric ammonium citrate. Ferric ammonium citrate (iron (III) ammonium citrate) is prepared by the reaction of ferric hydroxid…