How to separate/purify Metal-EDTA complexes from starting materials from NH4+, Sn+2/Sn+4, Cl-, and Na+ impurities. The approximate molecualar weight of Metal-EDTA complex is in the range of 500. The target compound was prepared in DIW and it is soluble in water. However on evaporation, it can be solidified along with impurities.
Gel filtration was tried but did not work well with G-10 material packed in a column of appr. 7 cm.
Dear Michael Päch
My complexes is Tc(IV)-EDTA and I want to purify it from starting materials. What is possible approach to purify various Tc-EDTA complexes mixture from each other as well as separation from reactants salts.
As metal EDTA complexes are ionic, solvent extraction route is not possible. You can try ion Chromatography for separation.
thanks Badal and Michael for your suggestions. I will try these methods
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