1.0 2010-04-08 22:07:20 UTC 2025-11-18 23:02:55 UTC FDB006864 Magnesium oxalate Magnesium oxalate, also known as magnesium oxalic acid or dipotassium oxalate, belongs to dicarboxylic acids and derivatives class of compounds. Those are organic compounds containing exactly two carboxylic acid groups. Magnesium oxalate is soluble (in water) and a moderately acidic compound (based on its pKa). Magnesium oxalate can be found in garden rhubarb, which makes magnesium oxalate a potential biomarker for the consumption of this food product. Magnesium oxalate is an inorganic compound comprising a magnesium cation with a 2+ charge bonded to an oxalate anion. It has the chemical formula MgC2O4. Magnesium oxalate is a white solid that comes in two forms: an anhydrous form and a dihydrate form where two water molecules are complexed with the structure. Both forms are practically insoluble in water and are insoluble in organic solutions . C2MgO4 112.323 111.96470018 magnesium(2+) ion oxalate magnesium(2+) ion oxalate [Mg++].[O-]C(=O)C([O-])=O InChI=1S/C2H2O4.Mg/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2 UHNWOJJPXCYKCG-UHFFFAOYSA-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 salts Aliphatic acyclic compound Carbonyl group Carboxylic acid Carboxylic acid salt Dicarboxylic acid or derivatives Hydrocarbon derivative Organic oxide Organic oxygen compound Organic salt Organooxygen compound logp 0.33 ALOGPS logs -1.12 ALOGPS solubility 1.25e+01 g/l ALOGPS logp -0.26 ChemAxon pka_strongest_acidic 1.36 ChemAxon iupac magnesium(2+) ion oxalate ChemAxon average_mass 112.323 ChemAxon mono_mass 111.96470018 ChemAxon smiles [Mg++].[O-]C(=O)C([O-])=O ChemAxon formula C2MgO4 ChemAxon inchi InChI=1S/C2H2O4.Mg/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2 ChemAxon inchikey UHNWOJJPXCYKCG-UHFFFAOYSA-L ChemAxon polar_surface_area 80.26 ChemAxon refractivity 36.11 ChemAxon polarizability 5.46 ChemAxon rotatable_bond_count 1 ChemAxon acceptor_count 4 ChemAxon donor_count 0 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1329838 Specdb::MsMs 1329839 Specdb::MsMs 1329840 Garden rhubarb Type 1 specific Rheum rhabarbarum 3621