1.0 2010-04-08 22:13:00 UTC 2025-11-19 01:53:09 UTC FDB017286 Sodium fumarate Nutrient supplement Sodium fumarate, also called disodium fumarate, is a compound with the molecular formula Na2C4H2O4. It is the sodium salt of fumaric acid, used as an acidity regulator in processed foods. 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. 2-Butenedioic acid (E)-, sodium salt Fumaric acid, sodium salt Sodium 2-butenedioate, (E)- Sodium fumarate C4H2Na2O4 160.0358 159.974847902 disodium (2E)-but-2-enedioate disodium fumarate 7704-73-6 [Na+].[Na+].[O-]C(=O)\C=C\C([O-])=O 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+;; MSJMDZAOKORVFC-SEPHDYHBSA-L belongs to the class of organic compounds known as dicarboxylic acids and derivatives. These are organic compounds containing exactly two carboxylic acid groups. Dicarboxylic acids and derivatives Organic compounds Organic acids and derivatives Carboxylic acids and derivatives Dicarboxylic acids and derivatives Aliphatic acyclic compounds Carbonyl compounds Carboxylic acid salts Carboxylic acids Hydrocarbon derivatives Organic oxides Organic sodium salts Unsaturated fatty acids Aliphatic acyclic compound Carbonyl group Carboxylic acid Carboxylic acid salt Dicarboxylic acid or derivatives Fatty acid Fatty acyl Hydrocarbon derivative Organic alkali metal salt Organic oxide Organic oxygen compound Organic salt Organic sodium salt Organooxygen compound Unsaturated fatty acid logp 0.28 ALOGPS logs 0.03 ALOGPS solubility 1.70e+02 g/l ALOGPS logp -0.041 ChemAxon pka_strongest_acidic 3.55 ChemAxon iupac disodium (2E)-but-2-enedioate ChemAxon average_mass 160.0358 ChemAxon mono_mass 159.974847902 ChemAxon smiles [Na+].[Na+].[O-]C(=O)\C=C\C([O-])=O ChemAxon formula C4H2Na2O4 ChemAxon inchi 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+;; ChemAxon inchikey MSJMDZAOKORVFC-SEPHDYHBSA-L ChemAxon polar_surface_area 80.26 ChemAxon refractivity 46.28 ChemAxon polarizability 8.65 ChemAxon rotatable_bond_count 2 ChemAxon acceptor_count 4 ChemAxon donor_count 0 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1223638 Specdb::MsMs 1223639 Specdb::MsMs 1223640 Specdb::MsMs 1339267 Specdb::MsMs 1339268 Specdb::MsMs 1339269 odorless