Studies on Solute-Solvent Interaction of Different Concentrated Solutions of 1-Carboxamido Pyrazolinein 70% Dioxane-Water and Methanol-Water by Viscosity Measurement.

Abstract

Viscosity measurements have been made on a system comprising  1-carboxamido-
3-(2'-hydroxy-5'-chlorophenyl)-5-anisyl-Δ²-pyrazoline in 70%
dioxane-water and 70% methanol-water at 30^oC. The data have been used
to calculate viscosity and  β-coefficient.  We have also studied the effect of
solvent on viscosity.  It has been found that viscosity increases with increase
in the percentage of dioxane and methanol.  Also, viscosity increased due
to increase in the concentration of  1-carboxamido-3-(2' -hydroxy-5' -chlorophenyl)-
5-anisyl-Δ²-pyrazoline (ligand solute) in both solvent dioxane and
methanol.