(a) Identity. (1) The color additive synthetic iron oxide consists of any one or any combination of synthetically prepared iron oxides, including the hydrated forms. It is free from admixture with other substances.
CFR 21-73.200-2015 history
2015CFR 21-73.200-2015 Food and drugs. Part73:Listing of color additives exempt from certification. SubpartA:Foods. Section73.200:Synthetic iron oxide.