EXTRACTION-PHOTOMETRIC DETERMINATION OF MANGANESE (II) WITH 2,4-DIHYDROXYTHIOPHENOL AND AMINOPHENOLS

Abstract

The interaction of manganese (II) ions with 2,4-dihydroxythiophenol in the presence of aminophenols was studied. The action of aminophenols on hydroxy halogen thiophenolate of manganese (II) (рН 2.3–8.1) forms a yellow compound, which is extracted well by halogen-containing solvents. The extraction of the above compounds into the organic phase is 97.3–99.1%. The chloroform extract of hydroxythiophenolate complex of manganese (II) by aminophenols has absorption
maximum at 400–420 nm (ε = (2.14–2.70)·104).
Keywords: manganese (II), 2,4-dihydroxythiophenol, aminophenols, mixed ligand complexes
(MLC), light absorption