Ferrous ascorbate

CAS 24808-52-4

Ferrous ascorbate combines iron with vitamin C, which improves how much of the iron the body absorbs.

Where it is and isn’t permitted

Status of Ferrous ascorbate 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 184.1307aretrieved 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 ascorbic acid. The pairing is deliberate: ascorbate keeps iron in the more absorbable form.

  • Vegan
  • Vegetarian
CAS registry number
24808-52-4
InChIKey
RFBYLSCVRUTUSB-ZZMNMWMASA-L
PubChem
CID 86763295

Every name it appears under

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

CAS registry number

  • 24808-52-4

As it appears in regulation

  • Ferrous ascorbate

Other names

  • (2R)-2-((1S)-1,2-DIHYDROXYETHYL)-4,5-DIHYDROXYFURAN-3-ONE, IRON(2+)
  • Ascofer
  • Complefer
  • Dihydrogen bis(L-ascorbato(2-)-02,03)ferrate(2-)
  • FERRATE(2-), BIS(L-ASCORBATO(2-)-.KAPPA.O2,.KAPPA.O3)-, DIHYDROGEN
  • FERRATE(2-), BIS(L-ASCORBATO(2-)-.KAPPA.O2,.KAPPA.O3)-, HYDROGEN (1:2)
  • Ferrate(2-), bis(L-ascorbato(2-)-02,03)-, dihydrogen
  • FERRATE(2-), BIS(L-ASCORBATO(2-)-O2,O3)-, DIHYDROGEN
  • Ferrous ascorbate
  • Ferrous cevitamate
  • Iron(2+) di-L-ascorbate
  • Iron(2+) L-ascorbate
  • Iron(II) ascorbate
  • L-Ascorbic acid, iron(2+) salt (2:1)
  • Nedifer

Systematic names

  • IRON(2+) BIS((2S)-2-((2R)-3,4-DIHYDROXY-5-OXO-2,5-DIHYDRO-2-FURANYL)-2-HYDROXYETHANOLATE)
  • Iron(2+) bis{(2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate}

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-ascorbate.json