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.
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The increase in production comes in response to growing global demand for chelating agents, the company says.
Chapter 1 provides a presentation and analysis of the global market for chelating agents, including forecasts up to 2022.
In most studies with chelating agents to treat cases of metal intoxication, focus has been primarily on the mobilization (mainly due to renal excretion) of toxic metal.
1-3 Humectants Skin Care 0-5 Specialty Additives Additives 0-5 Actives Actives 0-1 Fragrance, Solubilizers if needed 0-2 Chelating agents, pH buffers q.
Chelating agents, especially EDTA are routinely employed as irrigants inside the root canal for their excellent chelating action.
Among the more common uses of chelating agents are to clean up contaminated ground water, to control ions that affect water hardness, and to process photographic film.
In a study last year, the researchers even reported that chelating agents, which trap and remove metals from tissues, dissolve beta-amyloid in brain tissue taken from people who had died of Alzheimer's disease.
Research indicates it is possible to build the inhibitory spectrum of bacteriocins by combining them with chelating agents and cell-wall-degrading enzymes.
The fifteen major classes of additives discussed and codified are identified by the chapter headings as follows Anti-oxidants, Sweeteners, Flavourings, Colours, Preservatives, Enzymes, Nutritive additives, Emulsifiers, Baking agents, Hydrocolloids, Antifoam and release agents, Flour improvers and raising agents, Gases, and Chelating agents.
Chelating agents hold micronutrients in a form which makes them most available to the plant.
This report analyzes the worldwide markets for Chelating Agents in Metric Tons by the following End-Use Applications: Household and Industrial Cleaners, Waste Water Treatment, Paper & Pulp Processing, and Other Applications.