Collect. Czech. Chem. Commun. 1997, 62, 375-386

Sulfur Analogs of Imidodiphosphoric Acid as Extractants

Oldřich Navrátila, Alena Tokárováa, Petr Sládeka, Eckhard Herrmannb and Moein Nouamanc

a Military Academy, 68203 Vyškov, Czech Republic
b University of Technology and Economy, 01069 Dresden, Germany
c Tishreen University, Lattakia, Syria


The distribution of Ag, Zn, Cd, Sc, Eu, Hg, and Hf between mineral acids (HNO3, HCl) and benzene solutions of selected sulfur derivatives of organophosphoric reagents containing the P(X)NHP(X) or (RO3)PS group (X = O, S) was examined. The effect of the organic solvent was also investigated for Hg and some of the reagents. The composition of the complexes extracted was identified, and the corresponding extraction constants were calculated.

Keywords: Solvent extraction; Sulfur analogs of imidodiphosphoric acid.