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    Home > What is chelating agent?

    What is chelating agent?

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Chelating agent is a kind of compound or chemical that can react with heavy metal, reconstruct chemical composition and promote stability, even bind with other metals, nutrients or substances Chelating agents exist naturally and are important parts of many biological processes They can transfer nutrients to plants and help people and many animals digest food In many places, chelating agents can also be manufactured artificially, and have many important applications in industry and medicine These factors are very useful when they need to decompose, isolate or remove heavy metal ions The principle of chelating agent the chemical principle of these factors is somewhat complicated, but the basic principle is to bind metal ions, reconstruct their core structure and chemical composition Most metals have a chemical structure close to the chain, but the addition of chelating agent will form a ring, so it is also called a ligand This ring structure makes ions more stable and helps them move easily in different environments Ethylenediamine is one of the most common chelating agents and an excellent example of these substances Its chemical structure is C2H8N2 Ethylenediamine, known as a bidentate factor or ligand, means that two bonds can be formed - each nitrogen atom can bind the same metal ions Depending on the number of acceptable metal bonds, ions can form chelates with 1, 2 or 3 ethylenediamine molecules The more bonds, the more stable the chelation The role in nature many life support processes require naturally occurring chelates, and their formation is inseparable from the transformants Vitamin B12 cobalt chromium compound is an example It is the dietary nutrition needed by human beings and most animals, but in most cases it can not be well digested or absorbed unless it forms a ligand with some chelating agent in the body Hemoglobin iron complex transmits oxygen through blood after chelation Similarly, chlorophyll magnesium complex is the key element of photosynthesis in plants Without chelating agents, these processes would be slow or even impossible Chelating agents for industrial use are often used in industrial production as detergents, stabilizers, preservatives, flavor and color retention agents EDTA is one of the most popular chelating agents, which can form four or six bonds with metal ions EDTA is widely used to enhance the cleaning ability of detergents and soaps It can form chelates with magnesium and calcium metals in water These factors are also used to maintain the color of textile dyes EDTA is also used as a food additive in some places Food spoilage is usually catalyzed by enzymes and requires the participation of specific excessive metals But EDTA can make the destructive enzyme lose its function, so it has the function of food antisepsis In addition, EDTA also inactivates enzymes that cause food to lose color or taste The importance of chelating agents in the field of medicine is very important in many medical treatments and experiments They can be used to isolate and remove calcium from the blood and protect the blood during surgery Some lead poisoning and other metal poisoning treatments also use chelating agents When factors enter the bloodstream, they lock in free metal ions, chelate them, and remove them from the bloodstream, usually from the urine Dimercaprol is a common chelating agent It can help remove heavy metal toxins such as antimony, mercury and arsenic by forming sulfur bonds for metal ions.
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