Use of citric acid partial esters for the extraction of iron

Details Use of citric acid partial esters for the extraction of iron Use of citric acid partial esters for the extraction of iron

C - Chemistry, Metallurgy

22

B

53/375

C22B 3/32 (2006.01) C01G 49/00 (2006.01)

Patent

CA 1311619

ABSTRACT OF THE DISCLOSURE Citric acid partial esters corresponding to the following general formula (I) Image in which R1, R2 and R3 represent hydrogen or a straight-chain or branched C4-C20 alkyl radical or a metal atom, with the proviso that at least one but at most two of the substituents R1, R2 and R3 represent such an alkyl radicals or mixtures of the citric acid partial esters corresponding to general formula (I), are used for the extraction of iron from aqueous solutions.

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