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]

References

^ Xu, Zhe; Shan, Chao; Xie, Bihuang; Liu, Yan; Pan, Bingcai (2017). "Decomplexation of Cu(II)-EDTA by UV/Persulfate and UV/H2O2: Efficiency and mechanism". Applied Catalysis B: Environmental. 200: 439–447. doi:10.1016/j.apcatb.2016.07.023.
^ Zhao, Zilong; Liu, Zekun; Wang, Hongjie; Dong, Wenyi; Wang, Wei (2018). "Sequential application of Fenton and ozone-based oxidation process for the abatement of Ni-EDTA containing nickel plating effluents". Chemosphere. 202: 238–245. Bibcode:2018Chmsp.202..238Z. doi:10.1016/j.chemosphere.2018.03.090. PMID 29571144.
^ Sohrin, Yoshiki; Urushihara, Shouhei; Nakatsuka, Seiji; Kono, Tomohiro; Higo, Eri; Minami, Tomoharu; Norisuye, Kazuhiro; Umetani, Shigeo (2008). "Multielemental Determination of GEOTRACES Key Trace Metals in Seawater by ICPMS after Preconcentration Using an Ethylenediaminetriacetic Acid Chelating Resin". Analytical Chemistry. 80 (16): 6267–6273. doi:10.1021/ac800500f. PMID 18646776.
^ Zhou, Zhao-Hui; Deng, Yuan-Fu; Liu, Qiong-Xin; Zhang, Hua-Lin; Mak, Thomas C. W.; Chow, Yuan L. (2007). "Selective Ligand Conversion of Ethylenediamine Tetraacetate to Its Triacetate on Peroxotitanate(IV)". Inorganic Chemistry. 46 (17): 6846–6848. doi:10.1021/ic701256e. PMID 17645332.

[1] Xu, Zhe; Shan, Chao; Xie, Bihuang; Liu, Yan; Pan, Bingcai (2017). "Decomplexation of Cu(II)-EDTA by UV/Persulfate and UV/H2O2: Efficiency and mechanism". Applied Catalysis B: Environmental. 200: 439–447. doi:10.1016/j.apcatb.2016.07.023.

[2] Zhao, Zilong; Liu, Zekun; Wang, Hongjie; Dong, Wenyi; Wang, Wei (2018). "Sequential application of Fenton and ozone-based oxidation process for the abatement of Ni-EDTA containing nickel plating effluents". Chemosphere. 202: 238–245. Bibcode:2018Chmsp.202..238Z. doi:10.1016/j.chemosphere.2018.03.090. PMID 29571144.

[3] Sohrin, Yoshiki; Urushihara, Shouhei; Nakatsuka, Seiji; Kono, Tomohiro; Higo, Eri; Minami, Tomoharu; Norisuye, Kazuhiro; Umetani, Shigeo (2008). "Multielemental Determination of GEOTRACES Key Trace Metals in Seawater by ICPMS after Preconcentration Using an Ethylenediaminetriacetic Acid Chelating Resin". Analytical Chemistry. 80 (16): 6267–6273. doi:10.1021/ac800500f. PMID 18646776.

[4] Zhou, Zhao-Hui; Deng, Yuan-Fu; Liu, Qiong-Xin; Zhang, Hua-Lin; Mak, Thomas C. W.; Chow, Yuan L. (2007). "Selective Ligand Conversion of Ethylenediamine Tetraacetate to Its Triacetate on Peroxotitanate(IV)". Inorganic Chemistry. 46 (17): 6846–6848. doi:10.1021/ic701256e. PMID 17645332.

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