Tetrasodium ethylenediaminetetraacetate tetrahydrate

• CAT Number: M056159
• CAS Number: 13235-36-4
• Molecular Formula: C10H20N2Na4O12
• Molecular Weight: 452.23
• Purity: ≥95%
• Synonyms: Tetrasodium ethylenediaminetetraacetate tetrahydrate; Ethylenediaminetetraacetic acid tetrasodium salt tetrahydrate
• Storage: -20°C
• IUPAC Name: tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate;tetrahydrate
• InChI: InChI=1S/C10H16N2O8.4Na.4H2O/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);;;;;4*1H2/q;4*+1;;;;/p-4
• InChIKey: XFLNVMPCPRLYBE-UHFFFAOYSA-J
• SMILES: C(CN(CC(=O)[O-])CC(=O)[O-])N(CC(=O)[O-])CC(=O)[O-].O.O.O.O.[Na+].[Na+].[Na+].[Na+]

Tetrasodium ethylenediaminetetraacetate tetrahydrate (Cat No.:M056159) is a water-soluble salt of EDTA, a widely used chelating agent that binds metal ions through its four carboxylate and two amine groups. In its tetrasodium form with four water molecules of hydration, it is commonly employed in water treatment, detergents, and laboratory buffers to sequester divalent and trivalent metal ions like Ca²⁺, Mg²⁺, and Fe³⁺. It stabilizes formulations, enhances cleaning efficiency, and prevents metal-catalyzed degradation. Tetrasodium EDTA is also used in cosmetics, food processing, and pharmaceuticals for metal ion control and preservation.