Magnesium di-L-glutamate

E number E625INS 625CAS 18543-68-5

Used as a flavour enhancer.

Magnesium diglutamate is a flavour enhancer used where both sodium reduction and magnesium fortification are wanted.

Where it is and isn’t permitted

Status of Magnesium di-L-glutamate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationNot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.
Codex AlimentariusCodex Alimentarius Commission / JECFAPermitted, with conditions

1 food category

no numerical limit (good manufacturing practice)

CXS 192-1995 Table Three, INS 625and 1 further provisionretrieved 2026-09-07

What it is made from

Made by neutralising fermentation-derived glutamic acid with a magnesium base.

  • Vegan
  • Vegetarian
CAS registry number
18543-68-5
InChIKey
WNPYNOGQURLHSF-DFWYDOINSA-L
PubChem
CID 198473

Every name it appears under

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

E number

  • E625

INS number

  • 625

CAS registry number

  • 110011-84-2
  • 18543-68-5
  • 64407-99-4

Other names

  • ASV3QPB24W
  • CCRIS 4217
  • E 625
  • GLUTAMIC ACID, MAGNESIUM SALT
  • Glutamic acid, magnesium salt (1:1), L-
  • L-Glutamic acid hemimagnesium salt hydrate
  • L-Glutamic acid, magnesium salt (1:1)
  • L-GLUTAMIC ACID, MAGNESIUM SALT (2:1)
  • MAGNESATE(2-), BIS(L-GLUTAMATO(2-)-.KAPPA.N,.KAPPA.O1)-, HYDROGEN (1:2), (T-4)-
  • MAGNESATE(2-), BIS(L-GLUTAMATO(2-)-KAPPAN,KAPPAO1)-, HYDROGEN (1:2), (T-4)-
  • MAGNESIUM DI-L-GLUTAMATE
  • Magnesium diglutamate
  • Magnesium glutamate
  • Magnesium L-glutamate
  • Magnesium L-glutamate (1:1)
  • magnesium;(2S)-2-aminopentanedioate
  • Monomagnesium di-L-glutamate
  • Monomagnesium glutamate
  • WNPYNOGQURLHSF-DFWYDOINSA-L

Systematic names

  • magnesium;(4S)-4-amino-5-hydroxy-5-oxopentanoate;tetrahydrate

Hazard reference values

Values set by assessing bodies. A body that has not set a value is not listed here.
TypeValuePopulationAssessed byOpinion
ADI30 mg/kg bw/dayconsumersEFSAnot identified in the dataset

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

  • gsfa 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/magnesium-di-l-glutamate.json