Ethylenediaminediacetic acid

Ethylenediaminediacetic acid
Names
	Preferred IUPAC name 2,2′-[Ethane-1,2-diylbis(azanediyl)]diacetic acid
	Other names N,N′-Ethylenediglycine
Identifiers
CAS Number	5657-17-0 ;
3D model (JSmol)	Interactive image ;
ChEBI	CHEBI:132240 ;
ChEMBL	ChEMBL296340 ;
ChemSpider	55826 ;
ECHA InfoCard	100.024.641
EC Number	227-105-6;
KEGG	C21397 ;
PubChem CID	61975 ;
UNII	4LX0U5342U ;
CompTox Dashboard (EPA)	DTXSID7063970 ;
	InChI InChI=1S/C6H12N2O4/c9-5(10)3-7-1-2-8-4-6(11)12/h7-8H,1-4H2,(H,9,10)(H,11,12) Key: IFQUWYZCAGRUJN-UHFFFAOYSA-N;
	SMILES C(CNCC(=O)O)NCC(=O)O;
Properties
Chemical formula	C6H12N2O4
Molar mass	176.172 g·mol−1
Appearance	white solid
Melting point	228 °C (442 °F; 501 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H315, H318, H319, H335, H411
Precautionary statements	P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Last updated September 27, 2025

Ethylenediaminediacetic acid (EDDA not to be cnfused with Ethylenediamine diacetate(CAS:38734-69-9) also known as EDDA) is the organic compound with the formula C₂H₄(NHCH₂CO₂H)₂. It is a derivative of two molecules of glycine, wherein the amines are linked. It is a white solid. It is one of several aminopolycarboxylic acids.

The conjugate base is a tetradentate ligand.^[1] A representative complex is Na[Co(EDDA)(CO₃)].^[2]

Related compounds

ethylenediaminetetraacetic acid

References

↑ Sabo, Tibor J.; Grguric-Sipka, Sanja R.; Trifunovic, Srecko R. (2002). "Transition Metal Complexes with EDDA-Type Ligands-a Review". Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 32: 1661–1717. doi:10.1081/SIM-120015086. S2CID 94409799.
↑ Leon J. Halloran; Arlene L. Gillie; J. Ivan Legg (1978). "Ethylenediamine- N,N ′-Diacetic Acid Complexes of Cobalt(III)". Inorganic Syntheses. Vol. 18. pp. 103–111. doi:10.1002/9780470132494.ch17. ISBN 978-0-470-13249-4.

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[1] Sabo, Tibor J.; Grguric-Sipka, Sanja R.; Trifunovic, Srecko R. (2002). "Transition Metal Complexes with EDDA-Type Ligands-a Review". Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 32: 1661–1717. doi:10.1081/SIM-120015086. S2CID 94409799.

[2] Leon J. Halloran; Arlene L. Gillie; J. Ivan Legg (1978). "Ethylenediamine- N,N ′-Diacetic Acid Complexes of Cobalt(III)". Inorganic Syntheses. Vol. 18. pp. 103–111. doi:10.1002/9780470132494.ch17. ISBN 978-0-470-13249-4.

[1]

[2]

Names

Preferred IUPAC name 2,2′-[Ethane-1,2-diylbis(azanediyl)]diacetic acid
Other names N,N′-Ethylenediglycine
Identifiers
CAS Number	5657-17-0
3D model (JSmol)	Interactive image
ChEBI	CHEBI:132240
ChEMBL	ChEMBL296340
ChemSpider	55826
ECHA InfoCard	100.024.641
EC Number	227-105-6
KEGG	C21397
PubChem CID	61975
UNII	4LX0U5342U
CompTox Dashboard (EPA)	DTXSID7063970
InChI InChI=1S/C6H12N2O4/c9-5(10)3-7-1-2-8-4-6(11)12/h7-8H,1-4H2,(H,9,10)(H,11,12) Key: IFQUWYZCAGRUJN-UHFFFAOYSA-N
SMILES C(CNCC(=O)O)NCC(=O)O
Properties
Chemical formula	C₆H₁₂N₂O₄
Molar mass	176.172 g·mol⁻¹
Appearance	white solid
Melting point	228 °C (442 °F; 501 K)
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H315, H318, H319, H335, H411
Precautionary statements	P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references