Sodium fumarate

Sodium fumarate, also called disodium fumarate, is a compound with the molecular formula Na2C4H2O4.[1] It is the sodium salt of fumaric acid,[1] used as an acidity regulator in processed foods.[1] Sodium fumarate and fumaric acid are sometimes used as terminal electron acceptors in the cultivation of certain anaerobic microorganisms. It appears as an odourless, white, crystalline powder and is soluble in water.

Sodium fumarate
Names
Preferred IUPAC name
Disodium (2E)-but-2-enedioate
Other names
Disodium fumarate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.037.337
UNII
  • InChI=1S/C4H4O4.2Na/c5-3(6)1-2-4(7)8;;/h1-2H,(H,5,6)(H,7,8);;/q;2*+1/p-2/b2-1+;; checkY
    Key: MSJMDZAOKORVFC-SEPHDYHBSA-L checkY
  • InChI=1/C4H4O4.2Na/c5-3(6)1-2-4(7)8;;/h1-2H,(H,5,6)(H,7,8);;/q;2*+1/p-2/b2-1+;;
    Key: MSJMDZAOKORVFC-HYKNURKJBY
  • [Na+].[Na+].[O-]C(=O)\C=C\C([O-])=O
Properties
C4H2Na2O4
Molar mass 160.04 g/mol
Appearance White powder
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

References
  1. PubChem. "Disodium fumarate". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-11-27.
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