SOLVENT EXTRACTIVE SEPARATION OF MANGANESE(II) WITH TRIS(2-ETHYLHEXYL) PHOSPHATE

A method is developed for the extraction of manganese(II) from salicyl ate solution with Tris(2-ethylhexyl)phosphate as extractant. Manganese is extracted quantitatively from 7xl0(-1)mol/l salicylate solution at a pH 5.2-5.6 with 1.28mol/l Tris(2-ethylhexyl)phosphate (dissolved in toluene). The probable extracted species as ascertained by logD-logC plots is Mn(HSal)(2)2T2EHP. The method permits separation of manganese (II) from commonly associated elements and has been extended for the s eparation and determination of manganese in alloys, pharmaceuticals an d environmental samples.