1.0 2010-04-08 22:04:42 UTC 2025-11-18 22:22:10 UTC FDB000748 Edetate disodium Preservative and sequestrant in foods Ethylenediaminetetraacetic acid, widely abbreviated as EDTA, is a polyamino carboxylic acid and a colourless, water-soluble solid. Its conjugate base is named ethylenediaminetetraacetate. It is widely used to dissolve limescale. Its usefulness arises because of its role as a hexadentate ("six-toothed") ligand and chelating agent, i.e. its ability to "sequester" metal ions such as Ca2+ and Fe3+. After being bound by EDTA, metal ions remain in solution but exhibit diminished reactivity. EDTA is produced as several salts, notably disodium EDTA and calcium disodium EDTA. Acetic acid, (ethylenedinitrilo)tetra-, disodium salt, dihydrate (8CI) Disodium dihydrogen ethylenediaminetetraacetate dihydrate Disodium edetate dihydrate Disodium EDTA dihydrate Disodium ethylenediaminetetraacetate dihydrate Edta, disodium salt dihydrate Ethylenediaminetetraacetic acid disodium salt dihydrate Glycine, N,N'-1,2-ethanediylbis[N-(carboxymethyl)-, disodium salt, dihydrate (9CI) Glycine, N,N'-1,2-ethanediylbis[N-(carboxymethyl)-, sodium salt, hydrate (1:2:2) C10H18N2Na2O10 372.2369 372.075684156 disodium 2-({2-[(carboxylatomethyl)(carboxymethyl)amino]ethyl}(carboxymethyl)amino)acetate dihydrate disodium 2-({2-[(carboxylatomethyl)(carboxymethyl)amino]ethyl}(carboxymethyl)amino)acetate dihydrate 6381-92-6 O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O InChI=1S/C10H16N2O8.2Na.2H2O/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20;;;;/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20);;;2*1H2/q;2*+1;;/p-2 OVBJJZOQPCKUOR-UHFFFAOYSA-L belongs to the class of organic compounds known as tetracarboxylic acids and derivatives. These are carboxylic acids containing exactly four carboxyl groups. Tetracarboxylic acids and derivatives Organic compounds Organic acids and derivatives Carboxylic acids and derivatives Tetracarboxylic acids and derivatives Aliphatic acyclic compounds Alpha amino acids Amino acids Carbonyl compounds Carboxylic acid salts Carboxylic acids Hydrocarbon derivatives Organic oxides Organic sodium salts Organic zwitterions Organopnictogen compounds Trialkylamines Aliphatic acyclic compound Alpha-amino acid Alpha-amino acid or derivatives Amine Amino acid Amino acid or derivatives Carbonyl group Carboxylic acid Carboxylic acid salt Hydrocarbon derivative Organic alkali metal salt Organic nitrogen compound Organic oxide Organic oxygen compound Organic salt Organic sodium salt Organic zwitterion Organonitrogen compound Organooxygen compound Organopnictogen compound Tertiary aliphatic amine Tertiary amine Tetracarboxylic acid or derivatives hydrate melting_point Mp 252 dec. (dihydrate) logp -5.2 ChemAxon pka_strongest_acidic 1.49 ChemAxon pka_strongest_basic 8.13 ChemAxon iupac disodium 2-({2-[(carboxylatomethyl)(carboxymethyl)amino]ethyl}(carboxymethyl)amino)acetate dihydrate ChemAxon average_mass 372.2369 ChemAxon mono_mass 372.075684156 ChemAxon smiles O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O ChemAxon formula C10H18N2Na2O10 ChemAxon inchi InChI=1S/C10H16N2O8.2Na.2H2O/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20;;;;/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20);;;2*1H2/q;2*+1;;/p-2 ChemAxon inchikey OVBJJZOQPCKUOR-UHFFFAOYSA-L ChemAxon polar_surface_area 161.34 ChemAxon refractivity 84.02 ChemAxon polarizability 25.43 ChemAxon rotatable_bond_count 11 ChemAxon acceptor_count 10 ChemAxon donor_count 2 ChemAxon physiological_charge -3 ChemAxon formal_charge 0 ChemAxon odorless