Puryfing Disodium EDTA
EDTA is a very efficient in trapping heavy metals and removing them from solutions/body. I want to buy some Disodium EDTA what is sold as an additive
for the synthesis of soaps/crèmes/cosmetics. I want to get this very pure so it can be used for example analytical experiments.
More information quoted from Wikipedia:
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Ethylenediaminetetraacetic acid, widely abbreviated as EDTA (for other names, see Table), is an aminopolycarboxylic acid and a colourless,
water-soluble solid. Its conjugate base is named ethylenediaminetetraacetate. It is widely used to dissolve limescale. Its usefulness arises because
of its role as a hexadentate ("six-toothed") ligand and chelating agent, i.e., its ability to "sequester" metal ions such as Ca2+ and Fe3+. After
being bound by EDTA, metal ions remain in solution but exhibit diminished reactivity. EDTA is produced as several salts, notably disodium EDTA and
calcium disodium EDTA.
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Does someone know how i can purify this to obtain high quality EDTA? Maybe dissolving it in a certain solvent and recrystallize it many times? I don't
have a clue because i'm not a professional chemist and don't want it to react to form undesired products.
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