Collect. Czech. Chem. Commun. 1994, 59, 1964-1970

Solvent Extraction of Mercury Complexes with Diisopropylaminoethanethiol and Other Substances Accompanying Agent VX

Oldřich Navrátil, Zbyněk Kobliha and Emil Halámek

Department of Chemistry, The Military College of Ground Forces, 682 03 Vyškov, Czech Republic


The distribution of 2-diisopropylaminoethanethiol (RSH) between aqueous phase containing picric acid at various pH values (ionic strength 0.1) and toluene as the organic phase was investigated. The protonation constant of the reagent is Ka = 106.27. The constants characterizing the formation of the ion-associate with the picrate anion were also determined. The distribution of mercury was also examined between solutions of RSH and its derivatives in low-polar organic solvents and aqueous phases containing mineral acids and/or their sodium salts. The composition of the extractable chelating complexes formed in neutral and alkaline aqueous phases is Hg : reagent = 1 : 3.