Yellow Iron Oxide
Also known as: E172iii, E172
Synthetic iron oxide pigments are FDA-approved color additives exempt from certification. Use levels are limited and considered safe at authorized levels.
What it is
Yellow iron oxide (E172iii / synthetic iron oxide), an inorganic pigment used as food coloring.
Yellow/tan/brown coloring in confections, sausage casings, dietary supplements.
What regulators actually say
"The color additive synthetic iron oxide may be safely used for the coloring of foods... in sausage casings... in soft and hard candy, mints, and chewing gum at levels consistent with good manufacturing practice... in dietary supplement tablets and capsules."
Regulatory status
United States — FDA
Approved color additive exempt from certification (21 CFR 73.200)
European Union — EFSA
Authorized as E 172
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