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H8126

Sigma-Aldrich

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

~98%

Synonym(s):

N-Carboxymethyl-N′-(2-hydroxyethyl)-N,N′-ethylenediglycine, HEDTA, HEEDTA

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About This Item

Linear Formula:
HOCH2CH2N(CH2CO2H)CH2CH2N(CH2CO2H)2
CAS Number:
150-39-0
Molecular Weight:
278.26
Beilstein/REAXYS Number:
1804795
EC Number:
205-759-3
MDL number:
MFCD00004294
UNSPSC Code:
12352116
PubChem Substance ID:
57654273
NACRES:
NA.22

assay

~98%

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
GHS05,GHS07

signalword

Danger

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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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
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
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
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
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
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