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H8126

Sigma-Aldrich

N-(2-Hydroxyethyl)ethylenediamine-N,N′,N′-triacetic acid

~98%

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Synonym(s):
N-Carboxymethyl-N′-(2-hydroxyethyl)-N,N′-ethylenediglycine, HEDTA, HEEDTA
Linear Formula:
HOCH2CH2N(CH2CO2H)CH2CH2N(CH2CO2H)2
CAS Number:
Molecular Weight:
278.26
Beilstein:
1804795
EC Number:
MDL number:
UNSPSC Code:
12352116
PubChem Substance ID:
NACRES:
NA.22

Assay

~98%

Quality Level

form

powder

mp

212 °C (dec.) (lit.)

SMILES string

OCCN(CCN(CC(O)=O)CC(O)=O)CC(O)=O

InChI

1S/C10H18N2O7/c13-4-3-11(5-8(14)15)1-2-12(6-9(16)17)7-10(18)19/h13H,1-7H2,(H,14,15)(H,16,17)(H,18,19)

InChI key

URDCARMUOSMFFI-UHFFFAOYSA-N

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Application

N-(2-Hydroxyethyl)ethylenediamine-N,N′,N′-triacetic acid (HEDTA) can be used as an ionophore for the selective determination of Fe(III) ions by the potentiometric method. It is also used to form complexes with metal ions such as iron(II), copper (II), zinc(II), manganese(II), and uranium(VI) ions. Therefore, HEDTA plays an important role in the separation of f-elements and the treatment and disposal of nuclear waste.

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Patrícia Graça Zanichelli et al.
Journal of inorganic biochemistry, 98(11), 1921-1932 (2004-11-04)
The [Ru(II)(Hedta)NO(+)] complex is a diamagnetic species crystallizing in a distorted octahedral geometry, with the Ru-N(O) length 1.756(4) A and the RuNO angle 172.3(4) degrees . The complex contains one protonated carboxylate (pK(a)=2.7+/-0.1). The [Ru(II)(Hedta)NO(+)] complex undergoes a nitrosyl-centered one-electron
Swaran J S Flora et al.
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP, 134(3), 319-328 (2003-03-20)
Aluminum, a known neurotoxic substance, has been suggested as a contributing factor in the pathogenesis of Alzheimer's disease. Therapeutic efficacy of combined administration of citric acid (CA) and N-(2-hydroxyethyl) ethylenediaminetriacetic acid (HEDTA) was evaluated in decreasing blood and brain aluminum
Y M Tzou et al.
Chemosphere, 51(9), 993-1000 (2003-04-17)
The complexation of Fe(II) with organic ligand results in the decrease of redox potential, and enhances the reduction ability of Fe(II). An important example is the use of Fe(II)-organic complexes to accelerate Cr(VI) reduction. Dissolved O(2) and light can potentially
C Huang et al.
Plant physiology, 124(1), 415-422 (2000-09-12)
Phosphate (P) is taken up by plants through high-affinity P transporter proteins embedded in the plasma membrane of certain cell types in plant roots. Expression of the genes that encode these transporters responds to the P status of the plants
Ana Alvarez-Fernández et al.
Journal of the American Society for Mass Spectrometry, 18(1), 37-47 (2006-10-03)
A high-performance liquid chromatography-electrospray ionization/mass spectrometry (time of flight) method has been developed for the simultaneous determination of synthetic Fe(III)-chelates used as fertilizers. Analytes included the seven major Fe(III)-chelates used in agriculture, Fe(III)-EDTA, Fe(III)-DTPA, Fe(III)-HEDTA, Fe(III)-CDTA, Fe(III)-o,oEDDHA, Fe(III)-o,pEDDHA, and Fe(III)-EDDHMA

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