edetic acid

EDTA (ethylenediaminetetraacetic acid) or its sodium salt has the property of combining with certain metal ions to form a molecular complex that locks up or chelates the calcium ion so that it no longer exhibits ionic properties. In hard water, calcium and magnesium ions are…

Ethylenediaminetetraacetic acid (EDTA) forms very stable complexes, and it is widely used for this purpose. Its applications include water softening (by tying up Ca²⁺ and Mg²⁺) and the preservation of organic substances, such as vegetable oils and rubber, in which case it combines with traces…

…as the calcium salts of ethylenediaminetetraacetic acid (EDTA) and penicillamine. A lengthy treatment may be necessary, but recovery is usually complete, except when there is major involvement of the brain structures. Until the last half of the 20th century, damage to the brain caused by lead poisoning ended in death…

…chelating agents, particularly salts of EDTA, or edetic (ethylenediaminetetraacetic) acid, are widely used for direct treatment of metal poisoning because they bind the toxic metal ions more strongly than do the vulnerable components of the living organism. Chelating agents are also employed as extractants in industrial and laboratory separation of…

…separating the rare earths are ethylene diamine tetraacetate (EDTA) and hydroxyethylene diamine triacetate (HEDTA).