ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Solubility of cerium and praseodymium 8-hydroxyquinolinates in organic solvents

R. Kopunec and A. Kotočová

Department of Nuclear Chemistry, Faculty of Natural Sciences, Komenský University, 801 00 Bratislava

Abstract: The solubility of CeOx₄ and РгОх_з in nine solvents at 25°C was determined. The solubility of CeOx₄ varies in the range 1.54 X 10^-3 — 0.03 X 10^-3 kmol m^-3 and decreases in the following order: chloroform > tetrahydrofuran > dioxan > benzene > chlorobenzene > carbon tetrachloride > acetone > acetonitrile > carbon disulfide. For РгОх₃ the solubility is 8.4 X 10^-5 —1.0 X 10^-5 kmol m^-3 and decreases in the order: chloroform > benzene > tetrahydrofuran > chlorobenzene > carbon tetrachloride > acetone > dioxan > carbon disulfide > acetonitrile. From the determined solubilities in the water-immiscible solvents and from the known solubility products, the two-phase stability constants and the extraction constants of the studied chelates were calculated.

Full paper in Portable Document Format: 281a77.pdf

Chemical Papers 28 (1) 77–82 (1974)