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What (who) is EDTA - definition

COMPOSTO QUÍMICO

EDTA

-quím sigla de ácido
etilenodiaminotetracético

Wikipedia

EDTA

EDTA (do inglês Ethylenediamine tetraacetic acid) ou ácido etilenodiamino tetra-acético é um composto orgânico que age como agente quelante, formando complexos muito estáveis com diversos íons metálicos. Entre eles estão magnésio e cálcio, em valores de pH acima de 7 e manganês, ferro(II), ferro(III), zinco, cobalto, cobre(II), chumbo e níquel em valores de pH abaixo de 7. O EDTA é um ácido que atua como ligante hexadentado, ou seja, pode complexar o íon metálico através de seis posições de coordenação, a saber: através de quatro ânions carboxilato (-COO^-), após a saída dos 4H⁺ dos grupos carboxílicos, e também através dos dois N.

https://pt.wikipedia.org/wiki/EDTA

Examples of use of EDTA

1. The Centres for Disease Control and Prevention (CDC), which investigated Abubakar‘s death, has said he was given a synthetic amino acid called Disodium EDTA instead of Calcium Disodium EDTA.

2. The form of EDTA used in the trial is supplied by AkzoNobel, a Dutch company, Lamas said.

3. Chelation (pronounced kee–LAY–shun) involves intravenous doses of a drug, in this case disodium EDTA, that proponents claim will bind to calcium built up in artery walls and help flush it from the body.

4. Your bubble bath is likely to contain potentially irritating detergents like sodium laureth sulphate and cocami–dopropyl betaine (the latter is also a penetration enhancer, allowing other chemicals to be more easily absorbed); preservatives such as tetrasodium EDTA, a potential irritant; and methylchloroisothiazolinone (both potential mutagens — substances that speed up gene mutation). If it contains cocamide EDTA (or similar compounds ending with DEA, TEA or MEA) along with formaldehyde–forming substances such as bronopol, DMDM hydantoin, diazo–lidinyl urea, imidazolidinyl urea and quaternium–15, it is likely to contain cancer–causing nitrosamines.