Separation of Tin and Thallium Valences by Paper Chromatography

Separation of tin and thallium valences has been sucessfully carried out by the technique of paper chromatography. Tin valences, which have been reported difficult to separate, have been resolved via their addition compounds with oxygen-containing solvents such as esters. Separation of thallium valences was comparatively simple, because thallic ion evinced greater propensity toward complexation in solvents like propanol and butanol. Precipitation chromatography using hydrochloric acid was also found effective in this separation.