STUDIES IN THE POLAROGRAPHIC BEHAVIOUR OF γ-BENZENE HEXACHLORIDE

Abstract

1. The quantitative estimation of the y-isomer of benzene hexachloride by the polarographic method has been studied using dioxane,alcohol and acetone as the organic solvents and lithium chloride and sodium acetate as the base electrolyte. An optimum concentration of 50% dioxane and 0-5 M sodium acetate and 01 Ivi lithium chloride in -the base solution has been found to be suitable for the estimation of y-benzene hexachloride in the range of 0 -2 x 10--3 M to 2 -0 x 10-3 M.This system does not require a maximum suppressor. Higher concentrations of sodium acetate with the use of gelatin as the maximum suppressor extends the applicability of the analytical method over a wider range of concentration of y-benzene hexachloride. The sensitivity of the -method was found to be higher in systems containing alcohol and acetone than in dioxane.
2. The concentration of y-benzene hexachloride in commercial sample of Gammexane has been estimated, using alcohol as the solvent.
3. A diminution in the concentration of the organic solvent is always accompanied by an increase in the molar limiting current. This effect is attributed to a change in the diffusion coefficient of the reduci bie substance in the medium.