(redirected from Ethylenediaminetetraacetate)
Also found in: Dictionary, Thesaurus, Medical.

chelating agents

chelating agents (kēˈlātĭng). Certain organic compounds are capable of forming coordinate bonds (see chemical bond) with metals through two or more atoms of the organic compound; such organic compounds are called chelating agents. The compound formed by a chelating agent and a metal is called a chelate. A chelating agent that has two coordinating atoms is called bidentate; one that has three, tridentate; and so on. EDTA, or ethylenediaminetetraacetate, (O2CH2)2NCH2CH2N(CH2CO2)2, is a common hexadentate chelating agent. Chlorophyll is a chelate that consists of a magnesium ion joined with a complex chelating agent; heme, part of the hemoglobin in blood, is an iron chelate. Chelating agents are important in textile dyeing, water softening, and enzyme deactivation and as bacteriocides.
The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.


(organic chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
EDTA (Ethylenediaminetetraacetate) anti-coagulated whole blood samples for routine haematological analysis selected for this study when suspicious for low platelet count.
Appropriately diluted standard papain solution in phosphate-cysteine disodium ethylenediaminetetraacetate buffer was added to 5mL of buffered 1% w/v casein substrate (pH 6.0 [+ or -] 0.1).
Increased outer membrane resistance to ethylenediaminetetraacetate and cations in novel lipid A mutants.
DNA extraction from larval fish was accomplished by first placing them in separate sterile 55 mm Petri dishes and allowing them to rehydrate in sterile TE buffer [l0mM Tris HC1 (pH 7.4), 1mM disodium ethylenediaminetetraacetate (EDTA) (pH 8.0)] for 30 minutes.
* Ethylenediaminetetraacetate and methyl acetate--existing risk reduction measures are effective, said the Commission.
Experimental lead nephropathy: treatment with calcium disodium ethylenediaminetetraacetate. Am J Kidney Dis 40:59-67.
Jardine PM, Taylor DL (1995) Fate and transport of ethylenediaminetetraacetate chelated contaminants in subsurface environments.
Dutch beats English by 3 letters for E (ethylenediaminetetraacetate), but English turns around to beat Dutch by 4 letters for U (humuhumunukunukuapuaa)!
Suspensions were centrifuged at 15,000 g for 10 min, chilled and washed with 100 mM Tris HCl buffer solution (pH 7.4) containing 5mM dithiothretol (DTT), 0.1 mM ethylenediaminetetraacetate (EDTA) and 0.4 mM pyridoxal phosphate (PALP).
For example, cobaltic carboxylate is an efficient promoter for the hydroperoxide decomposition, while the complex between cobalts ion and ethylenediaminetetraacetate (EDTA) does not react with hydroperoxides.
In chelation therapy, EDTA (ethylenediaminetetraacetate) is injected intravenously to detoxify the body.
The stability of angiotensin-I formed at room temperature in the presence of ethylenediaminetetraacetate to subsequent incubation at 37 [degrees]C.

Full browser ?