Extraction of zinc(ii) from aqueous alkali solutions byortho-derivatives of phenols

The ability of a series of ortho-functionalized phenol derivatives and ofN-(2-hydroximinocyclohexyl)palmitohydroxamic acid to extract Zn²⁺ ions from aqueous alkali solutions (0.2–4.0 mol L^–1) in the presence of trialkylmethylammonium methylsulfate has been investigated. The most active extractants are chelating phenols containing N- and S-coordinating groups and chelates of the pyrocatechol series.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1279–1281, May, 1996.