Ferric Diphosphate
Also known as: iron diphosphate, ferrous phosphate
Ferric pyrophosphate is an authorized iron fortificant. It is poorly water-soluble, which makes it useful in products where color and taste must be preserved, but bioavailability is moderate.
What it is
Ferric pyrophosphate (Fe4(P2O7)3), a water-insoluble iron salt used as a fortificant.
Iron source for fortification of cereals, flour, infant formulas, and rice.
Why it's flagged
- iron overdose risk in children if accidentally consumed in supplement form
What regulators actually say
"Ferric pyrophosphate (Fe4(P2O7)3·9H2O)... is generally recognized as safe when used in accordance with good manufacturing practice."
"Acute iron toxicity from supplements remains one of the most common causes of poisoning deaths among children."
Regulatory status
United States — FDA
GRAS as nutrient supplement under 21 CFR 184.1304.
European Union — EFSA
Authorized as a source of iron in food supplements (Reg. 1170/2009).
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