5-heptyl-2-hydroxy benzaldoximes

C - Chemistry – Metallurgy – 01 – G

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53/375, 260/591.

C01G 3/00 (2006.01) C22B 3/30 (2006.01)

Patent

CA 1056855

ABSTRACT OF THE DISCLOSURE 5-Heptl-2-hydroxybenzaldoximes especially in which the heptyl group is attached to the benzene ring through a tertiary carbon atom and particularly mixtures of such aldoximes are effective as extractants for metals such as copper from aqueous solutions. These aldoximes have a more rapid rate of metal transfer from aqueous to organic phase, and vice versa, than other alkylhydroxybenzaldoximes. The benzaldoximes may be prepared from the corresponding aldehydes by reaction with hydroxylamine.

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