Ethylenediaminetetraacetic Acid Properties, Molecular Formula, Applications - WorldOfChemicals

Ethylenediaminetetraacetic Acid Properties

Ethylenediaminetetraacetic Acid

Molecule 3D Structure Image
Molecule Structure Image



Ethylenediaminetetraacetic acid is a polyamino carboxylic acid and a colourless, water-soluble solid. Its conjugate base is named ethylenediaminetetraacetate. It is widely used to dissolve scale. Its usefulness arises because of its role as a hexadentate ligand and chelating agent, i.e. its ability to "sequester" metal ions such as Ca2+ and Fe3+. In the textile industry, it prevents metal ion impurities from modifying colours of dyed products. In the pulp and paper industry, EDTA inhibits the ability of metal ions, especially Mn2+, from catalyzing the disproportionation of hydrogen peroxide, which is used in "chlorine-free bleaching." In similar manner, EDTA is added to some food as a preservative or stabilizer to prevent catalytic oxidative decolouration, which is catalyzed by metal ions. In personal care products, it is added to cosmetics to improve their stability toward air. It is used to bind metal ions in the alternative medical practice of chelation therapy, e.g., for mercury and lead poisoning. It is used in a similar manner to remove excess iron from the body. In the laboratory, EDTA is widely used for scavenging metal ions. In biochemistry and molecular biology, ion depletion is commonly used to deactivate metal-dependent enzymes, either as an assay for their reactivity or to suppress damage to DNA or proteins. In analytical chemistry, EDTA is used in complexometric titrations and analysis of water hardness or as a masking agent to sequester metal ions that would interfere with the analyses.

Chemical Properties

Appearance White crystals or powder
Boiling Point 614.2 °C
CAS Number 60-00-4
ChEBI 42191
Density 0.86 g/cm3
EINECS Number 200-449-4
IUPAC Name 2,2',2'',2'''-(Ethane-1,2-diyldinitrilo)Tetraacetic Acid
InChI 1S/C10H16N2O8/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)
Melting Point 250°C
Molar Mass 292.24 g/mol
Molecular Formula C10H16N2O8
NFPA 704 H-1,F-1,R-0,C-NA
RTECS Number AH4025000
Refractive n20/D 1.363
Solubility 0.5 g/l
Synonyms EDTA; H4EDTA;Diaminoethane-Tetraacetic Acid;Edetic Acid;Edetate;Ethylenedinitrilo-Tetraacetic Acid;Versene;Ethylenediamine-Tetraacetate uses cookies to ensure that we give you the best experience on our website. By using this site, you agree to our Privacy Policy and our Terms of Use. X