Chelating agent is an organic substance that forms a stable "chelate" with some unstable divalent metal ions, such as iron, manganese, zinc, etc. Where it is easily oxidized or readily chemically reactive in water Precipitation of water and fertilizer, often need to use chelating agent to form a stable chelate, in order to facilitate the absorption of aquatic plants.
The most obvious example is that ferrous ions often require the use of chelating agents in order to avoid oxidation or precipitation, and known iron ions are essential for aquatic breeding is one of the important trace elements.Therefore, the chelating agent has become Fertilizer control, worthy of the complex, Chelating Agent its importance can not be ignored.
Obviously, the chelating effect is the chelating agent in the reaction when the change, in fact, that is a process.
Chelating has a wide range of applications in chemical research and industrial production.
In the chemical industry and industrial production process, Chelating Agent adding chelating agent to metal ions to produce completely different chelate, is to reduce and control the metal ion concentration of the main method.
Chelates are widely used in mineral flotation process, hydrometallurgy, extraction and separation of metal elements, catalytic synthesis of materials, softening of water, electroplating process, pharmaceutical industry, dyeing process and so on.
Chelates are widely used in hydrogen peroxide and hypochlorous acid as bleaching agents for chemical, Chelating Agent mechanical and deinking pulp bleaching. Part of the chelating agent in medicine can be used for lead and mercury and other poisoning treatment. The specific use of chelating agents is as follows:
1, can effectively inhibit the metal ions on hydrogen peroxide and hypochlorite bleach caused by catalytic decomposition, improve bleaching efficiency, save bleaching, reduce bleaching costs.
2, Fe3 + ions have a strong ability to capture and dispersion effect, to avoid Fe3 + ions and pulp in the reaction of the formation of groups of deep color, protect the fiber, improve pulp whiteness, reduce pulp back to yellow.
3, can effectively prevent calcium, magnesium and other metal ions in the pulp bleaching process occurred in the chemical reaction to form sediment, so as to prevent system equipment, pipeline scaling, Chelating Agent and can gradually remove the rinsing system of the original scale.
4, with a certain ability to disperse, Chelating Agent can improve the dispersion of sodium silicate.
5, to protect the pulp fiber, to prevent the peeling of NaOH on the fiber damage.
6, compared with the traditional DTPA, has a good price.
7, for the separation and purification of metal elements, Chelating Agent fabric dyeing and the manufacture of organic pigments.
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