Extraction of antimony (III) with 1,2,4-triazole derivatives from hydrochloric acid solutions and determination of conditions for the separation of Sb (III) from Bi (III)

The extraction of antimony (III) from hydrochloric acid solutions with 1-[2-(2,4-dichlorophenyl)-4- propyl-1,3-dioxolan-2-yl]-1H-1,2,4-triazole was studied. Optimal extraction conditions are found. It is assumed that antimony (III) is extracted by the anion exchange mechanism at a phase contact time of 5 min. The extractable antimo- ny (III) chlorocomplex was isolated and characterized by electron, IR spectroscopy and elemental analysis. The re- extraction and concentration of antimony (III) from hydrochloric acid solutions has been studied. The possibility of separating antimony (III) from bismuth (III) is shown.