De-ionized water was taken and a little KMnO4 and 2 or 3 pallets of NaOH were added to it. The solution was double distilled in an all glass distillation apparatus and the first fraction was rejected. The chloroform, is AR grade and further purified by distillation before use. The purity of the compound like Chloroform, and DMSO were checked by measuring their densities at 303.15 K and these agreed well within 5Х10 -5 g/cm3 with the values reported in the literature. Molar excess volumes for the various binary mixtures of non-electrolytes were measured in a two limbed specially designed dilatometer
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