Ferrous fumarate

CAS 141-01-5

Ferrous fumarate is an iron fortificant used in cereals, infant foods and supplements, absorbed nearly as well as ferrous sulfate but causing less off-flavour.

Where it is and isn’t permitted

Status of Ferrous fumarate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted21 CFR 184.1307dretrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Made by reacting an iron salt with fumaric acid.

  • Vegan
  • Vegetarian
CAS registry number
141-01-5
InChIKey
PMVSDNDAUGGCCE-TYYBGVCCSA-L
PubChem
CID 6433164

Every name it appears under

62 recorded names. A label may use any of them.

CAS registry number

  • 141-01-5
  • 7705-12-6

As it appears in regulation

  • Ferrous fumarate

Other names

  • (E)-but-2-enedioate;iron(2+)
  • 2-Butenedioic acid (2E)-, iron(2+) salt
  • 2-Butenedioic acid (2E)-, iron(2+) salt (1:1)
  • 2-Butenedioic acid (E)-, iron(2+) salt (1:1)
  • 2-Butenedioic acid, (E)-, iron(2+) salt
  • C4H2FeO4
  • CCRIS 6896
  • Cpiron
  • Erco-Fer
  • Ercoferro
  • Feostat
  • Feostat (TN)
  • Feroton
  • Ferrocite
  • Ferrofumarate
  • Ferrofume
  • Ferronat
  • Ferrone
  • Ferrosi fumaras
  • Ferrotemp
  • Ferrous fumarate
  • Ferrous fumarate (JAN/USP)
  • Ferrous fumarate; Iron(II) (E)-butenedioate
  • ferrous;(E)-but-2-enedioate
  • ferrousfumarate
  • Ferrum (TN)
  • Fersaday
  • Fersamal
  • Firon
  • Fumafer
  • Fumar
  • Fumar-F
  • Fumaric acid, iron(2+) salt
  • FUMARIC ACID, IRON(2+) SALT (1:1)
  • Fumiron
  • Galfer
  • Heferol
  • Hemoton
  • Ircon
  • Iron (as ferrous fumarate)
  • Iron (as fumarate)
  • Iron(2+) (2E)-but-2-enedioate
  • Iron(2+) fumarate
  • Iron(II) (E)-butenedioate
  • Iron(II) fumarate
  • Iron(II) fumarate (Standard)
  • LO MINASTRIN FE COMPONENT FERROUS FUMARATE
  • METERFER
  • Microgestin Fe
  • MINASTRIN 24 FE COMPONENT FERROUS FUMARATE
  • NORQUEST FE COMPONENT FERROUS FUMARATE
  • One-iron
  • Orgasal
  • Palafer
  • TARINA 24 FE
  • Toleron
  • Tolferain
  • Tolifer

Systematic names

  • (E)-but-2-enedioate;iron(2+)

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • ecfr retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/ferrous-fumarate.json