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Ethylenediaminetetraacetic acid is an aminopolycarboxylic acid with the formula 2]2. This white, water-soluble solid is widely used to bind to iron and calcium ions. It binds these ions as a hexadentate chelating agent. EDTA is produced as several salts, notably disodium EDTA, sodium calcium edetate, and tetrasodium EDTA.
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