Ethylenediaminetriacetic acid

Ethylenediaminetriacetic acid
Names
	Other names H3ed3a
Identifiers
CAS Number	688-57-3;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:132232;
ChemSpider	146773;
ECHA InfoCard	100.108.065
EC Number	614-744-4;
KEGG	C21396;
PubChem CID	167782;
CompTox Dashboard (EPA)	DTXSID80218909 ;
	InChI InChI=1S/C8H14N2O6/c11-6(12)3-9-1-2-10(4-7(13)14)5-8(15)16/h9H,1-5H2,(H,11,12)(H,13,14)(H,15,16) Key: OUDSFQBUEBFSPS-UHFFFAOYSA-N;
	SMILES C(CN(CC(=O)O)CC(=O)O)NCC(=O)O;
Properties
Chemical formula	C8H14N2O6
Molar mass	234.208 g·mol−1
Appearance	white solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ethylenediaminetriacetic acid is an organic compound with the formula HO₂CCH₂N(H)CH₂CH₂N(CH₂CO₂H)₂. It is a chelating agent of the aminopolycarboxylate class, related to ethylenediaminetetraacetic acid and the ethylenediaminediacetic acids. Its trianionic conjugate base functions as a pentadentate ligand. The material is of interest because it is a product of the degradation of metal-edta complexes.^[1]^[2] The ligand can be modified at the secondary amine for immobilization.^[3]

The ligand can be prepared analogously to edta or the titanium-edta complex can be degraded selectively.^[4]

[1]

[2]

[3]

[4]

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