Ethylenediamine tetraacetate

Ethylenediamine tetraacetic acid (EDTA) [60-00-4] (Sequestrene), an anticoagulent at 1 mg of the disodium salt per mL blood, complexes with and removes calcium, Ca ", from the blood. Oxalate, citrate, and fluoride ions form insoluble salts with Ca " and chelate calcium from the blood. Salts containing these anticoagulants include lithium oxalate [553-91-3] 1 mg/mL blood sodium oxalate [62-76-0]2 mg/mL blood ... 

Sequestrants. These protect SBR latex from ions through complex formation. EDTA (ethylenediamine tetraacetic acid) is the most common. 

DISSOLVINE , ethylenediamine tetraacetic acid, 59 DISSULFAN CE , endosulfan, 59 DISTINCT , dicamba, 59... 

Fig. 13.2 Linear plats of the effect of current density an the porasity, expressed as p.p.m. Cu, for three different gald-plating baths. The numbers next ta each point show the actual average thickness Orm) for each test. Bath A was a proprietary alkaline cyanide bath using silver as a brightener. Bath D was an acid gold bath containing cobalt and an ethylenediamine tetraacetic...

Organic compound (such as ethylenediamine-tetraacetic acid (EDTA) or nitrilo-triacetic acid (NTA) having the ability to take metal ions in water and produce soluble, coordinate-bond complexes. Chelants are commonly used in BW deposit control treatments and various cleaning formulations. 

Abbreviations edta = ethylenediamine-tetraacetic acid, bipy terpyridine, TPMPyP = tetrakis(4-N-methylpyridyl)porphyrin... 

Many polyazamacrocycles have been alkylated with chloroacetic acid leading to compounds which contain both amine and carboxylic acid functions, e.g. [63] (Stetter et al., 1981). These compounds are similar to EDTA (ethylenediamine tetraacetate). Although the ring size of this class of macrocycles and the number of N—CH2—COOH groups has been modified... 

More recently, Wiese and Weil" reported a detailed study of the mechanism of electroless copper deposition with formaldehyde from alkaline ethylenediamine-tetraacetate (EDTA)-containing solutions. The partial reactions were expected to be... 

Considerable effort has been directed to the degradation of complexing agents. The degradation of nitrilotriacetate (NTA), ethylenediamine tetraacetate (EDTA), and related compounds display some important featnres ... 

Metals may also be linked through an oxygen or nitrogen atom to form a stable metal complex without a carbon-metal bond. These include metal complexes of ethylenediamine tetraacetate (EDTA), diethylenetriamine pentaacetate (DTPA), or ethylenediamine tetramethylphosphonate (EDTMP). Metalloid compounds include antimonyl gluconate and bismuth salicylate. 

The rates are essentially independent of the distribution of metal in the MT with similar rates between Zn7—MTm (Cd, Zn)7-MT, and Cd7—MT. The values of the rate constants are ks = 6.9( 0.9) x 10 " s and kf=2.7( 1.2) x 10 s for the holo-protein. The slow rate constant is similar in magnitude to the first-order protein-dependent steps observed for reactions of DTNB (5,5 -dithiobis(2-nitrobenzoate)), EDTA (ethylenediamine tetraacetate), cisplatin, and other reagents, which has been attributed to a rearrangement of the protein. The fast step is more rapid by an order of magnitude, which suggests that other mechanisms are prevailing. 

EDTA Ethylenediamine tetraacetic acid ako known as etidronic acid EE Eosinophilic eosinophils EEG Electroencephalogram EET Epoxyeicosatrienoic acid EFA Essential fatty acid EFS Electrical field stimulation EGl Monoclonal antibody specific for the cleaved form of eosinophil cationic peptide... 

In a separate study, Igwe and Abia46 determined the equilibrium adsorption isotherms of Cd(II), Pb(II), and Zn(II) ions and detoxification of wastewater using unmodified and ethylenediamine tetraacetic acid (EDTA)-modified maize husks as a biosorbent. This study established that maize husks are excellent adsorbents for the removal of these metal ions, with the amount of metal ions adsorbed increasing as the initial concentrations increased. The study further established that EDTA modification of maize husks enhances the adsorption capacity of maize husks, which is attributed to the chelating ability of EDTA. Therefore, this study demonstrates that maize husks, which are generally considered as biomass waste, may be used as adsorbents for heavy metal removal from wastewater streams from various industries and would therefore find application in various parts of the world where development is closely tied to affordable cost as well as environmental cleanliness.46... 

The perturbation of monolayers with agents (e.g., disodium ethylenediamine tetraacetate, Ca+2-free medium, sodium citrate, cytochalasin D) to open tight junctions and the effect on the transmonolayer flux of permeants are addressed in this section. It has been observed that permeants taking predominantly the trans-cellular route are not affected by perturbants of the paracellular route, compared to extracellular or relatively hydrophilic permeants (Artursson and Magnusson, 1990). Let us put these general observations into a quantitative intepretation in the light of the transmonolayer kinetic studies of steroids in this section and of paracellular permeants in Section III. There are three cases to consider (1) ABL-controlled permeants, (2) monolayer-controlled permeants transported principally by the transcellular route, and (3) monolayer-controlled permeants for which the paracellular route dominates. 

The phosphoprotein phosvitin may attach a large number of ferric ions/mole, according to Gray (99) [citing work of Saltman and Multani], the number bound may be as large as 46. Ferric ion, although firmly complexed, may be removed from this egg yolk protein by dialysis against solutions of ethylenediamine tetraacetic acid (102). 

Scale deposits are converted to dispersed particles which can be circulated out of the wellbore. A chelating agent such as ethylenediamine tetraacetic acid can aid in dissolving calcium sulfate deposits. Hydrochloric acid following the basic treatment can also be used to dissolve calcium sulfate (167). 

Cory-Slechta DA, Weiss B, Cox C. 1987. Mobilization and redistribution of lead over the course of calcium disodium ethylenediamine tetraacetate chelation therapy. J Pharmacol Exp Ther 243 804-813. 

We could not find any study of Bi(III) ions in aqueous solutions except that Wang et al. [132] obtained nanorods of bismuth sulphide by sonicating an aqueous solution of bismuth nitrate and sodium thiosulphate in the presence of complexing agents such as ethylenediamine tetraacetic acid, triethanolamine and sodium tarta-rate. Similar results were found when thioacetamide was used in place of sodium thiosulphate as a source of sulfur. However, the results improved with higher yield... 

LAS linear alkylbenzolsulfonate, EDTA ethylenediamine-tetraacetic-acid, NTA nitrilotriacetate, D5 decamethylcyclopentasiloxane... 

This approach was followed by Yushmanov for the localization of papaverine in ionic micelles.42 Another interesting application was reported by Chien43 who measured 19F NMR relaxation times of trifluor-omethyl labelled atrazine induced by paramagnetic probes gadolinium ethylenediamine tetraacetic acid and 2,2,6,6-tertramethyl-piperidine-N-oxyl. The results showed that atrazine solubilized by humic micelles occupied a hydrophobic domain accessible only to neutral hydrophobic molecules. 

Area under the plasma concentration-time profile Chromium-51-labeled ethylenediamine-tetraacetic acid Cytochrome P450, 3A4 isozyme... 

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