| Solubility of sulphamethoxazole, sulphisoxazole and sulphasalazine in six solvents namely water,
methanol, ethanol, 1-propanol, acetone and chloroform were determined at 15, 25, 37 and 45 °C. Two
models derived from the Hildebrand solubility approach are proposed for solubility prediction at different
temperatures using a single determination. The experimental data of the present work as well as data
gathered from the literature have been employed to investigate the accuracy and prediction capability of
the proposed models. The overall percent deviations between the predicted and experimental values were
10.78 and 14.63% which were comparable to those of the classical two and three parameter models. The
proposed models were much superior to the two pure predictive models i.e., the ones which do not require
experimental solubility determination, as the overall percent deviations produced by the latter models
were 150.09 and 161.00%. |