Ethylenediaminetriacetate

Attempts to extend the C—N bond formation reaction using [Cr(edtra)(OH2)] (H3edtra = ethylenediaminetriacetic acid) were unsuccessful. The structures of the two ethylenediamine triacid complexes are different (107) (Fig. 15), and only [Cr(edtrp)(OH2)] has a flat sec-NH proton at the site of dehydration (see Section VI). 

N-[2-Hydroxyethyl]ethylenediaminetriacetic acid [150-39-0] M 278.3, m 212-214 (dec). Crystd from warm H2O, after filtering, by addition of 95% EtOH and allowing to cool. The crystals, collected on a sintered-glass funnel, were washed three times with cold absolute EtOH, then again crystd from H2O. After leaching with cold H2O, the crystals were dried at 100° under vacuum. [Spedding, Powell and Wheelwright JACS 78 34 1956]. 

Regeneration of Fem forms from Fe11 products is rather a simple task in alkaline media it is readily done by molecular oxygen Fe11 complexes with chelating ligands behave similarly in acidic media, eg oxidation of [FenL] complexes (L = EDTA, diethylenetriaminepentaacetate, and N- (hydroxyethyl) ethylenediaminetriacetate) by 02 was reported to proceed in three steps ... 

Figure 9.12 Mechanism of photochemical behaviour of the [Fe(edta)H2Of complex in the presence of some environmentally relevant electron donors and acceptors the reactivity scheme for [Fe(edta)(OH)]2 is analogous. D, electron donor A, electron acceptor ed3a, ethylenediaminetriacetate...

A derivative of triazacyclononane was used to prepare the titanium salt [Ti((OC6H3-But)NCH2CH2)3)][BPh4].872 Most recently, the ligand (TV-ethoxo)ethylenediaminetriacetate (EEDTA) was used to prepare the seven-coordinate compound (Ti(EEDTA) (H20))(H20)2.873... 

Fig. 5-56. Separation of iminodiacetic acid, ethylenediaminetriacetic acid, and ethylenediaminediacetic acid. - Separator column Mikropak MCH-10 (Varian) eluent 0.2 g/L sodium oc-tylsulfate + 0.5 mL/L H2S04 / methanol (92 8 v/v) flow rate 1 mL/min detection UV (215 nm) injection volume 50 pL solute concentrations 500 ppm IDA, 50 ppm EDTriA, and 50 ppm EDDA.

U.S. 6503873 (2002) Crudden et al. (Hampshire Chem) JV-acyl ethylenediaminetriacetic acid (ED3A) (Na or K lauroyl) A novel chelating surfactant product ultra-mild detergent compositions in combination with alkyl sulfates excellent lather stability... 

NTA = nitrilotriacetic acid, HEDTA = hydroxy-2-ethylenediaminetriacetic acid, CyDTA = fnuis-l,2-diatninocyclohexane-JV,iV,JV, iV -tetraacetic add, DTPA = diethylenetriaminepentaacetic add,... 

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