chelating agents


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Related to chelating agents: EDTA, chelate compound

chelating agents

(kē`lātĭng). Certain organic compounds are capable of forming coordinate bonds (see chemical bondchemical bond,
mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the formation of an aggregate with sufficient stability to be regarded as an
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) 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.
References in periodicals archive ?
In order to meet the fast growing global market demand for its innovative chelating agent, BASF is investigating several different options to expand and globalize its TrilonA M (Methylglycinediacetic acid) production capacity including plant expansions and investments into new production facilities.
Preparation of NiMo/KIT-6 hydrodesulfurization Catalysts with Tunable Sulfidation and Dispersion Degrees of Active Phase by Addition of Citric Acid as Chelating Agent.
The global scleroderma diagnostics and therapeutics market segmentation is based on indication (localized, systemic), test type (blood tests, electrocardiogram and echocardiogram, imaging techniques, pulmonary function tests, skin biopsy), drug class (calcium channel blockers, chelating agents, corticosteroids, endothelin receptor agonists, immunosuppressive agents, PDE-5 inhibitors, prostacyclin analogues, ACE inhibitors, H2 blockers, proton pump inhibitors).
The global market for chelating agents is growing due to the growth of the chemicals industry.
Increasing the concentration of chelating agents disturbs the ionic interactions between LPS molecules, reducing the rigidity of aggregates.
With a more frequent treatment schedule, close attention needs to be paid to patients' nutritional status, because chelating agents do not only bind toxic metals, they also bind nutritional elements.
Chelating agents such as edetate calcium disodium (EDTA), sodium 2, 3-dimercaptopropane sulfonate (DMPS), and dimercaprol (BAL) have been reported (Table 1) [7-10].
The increase in production comes in response to growing global demand for chelating agents, the company says.
From the knowledge of the characteristics of the complexes formed with organic reagents and their stability and solubility data, it has become increasingly possible to design new organic reagents / chelating agents and to specify the scope and limitations of their use in analytical chemistry [11].
Chelation therapy is a medical procedure that involves the administration of chelating agents to remove heavy metals from the body.
EDTA has known better biocompatibility compared to the other chelating agents also for the better activity on inorganic portion of the dentin makes it superior to all.
Among the topics are differential toxicity characteristics of green alternative chemicals, understanding mechanisms of metabolic transformations as a tool for designing safer chemicals, informing substitution to safer alternatives, life-cycle concepts for the sustainable use of engineered nanomaterials in nanoproducts, greener chelating agents, improvements to the performance of synthetic-based drilling muds, reducing carcinogenicity and mutagenicity through the mechanism-based molecular design of chemicals, designing for non-persistence, and the interaction of chemicals with the endocrine system.