Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

In this work, the equilibrium solubility of buprofezin in different pure solvents was determined. The mole solubility of buprofezin in these studied pure solvents increased with increasing temperature. The solubility data decreased according to the following order: toluene greater than ethyl acetate greater than DMF greater than acetone greater than 1-octanol greater than 1-butanol greater than n-propanol greater than acetonitrile greater than isopropanol greater than ethanol greater than methanol greater than water. The results were correlated with four thermodynamic models (the modified Apelblat equation, poundsfh equation, NRTL model and Wilson model), and the values of RMSD and RAD are no more than 27.26 e10-4, 2.76% respectively. Due to the maximum values of RAD and RMSD were 1.58 s and 3.77 e10-4 in modified Apelblat equation, which indicate that it is a suitable model to describe the results. Besides, the mixing Gibbs energy, mixing enthalpy and mixing entropy were computed. The values of poundsGmixG are negative in this experiment, therefore the dissolution process is a spontaneous and favorable process, and the poundsGmixS are all positive, which indicate the dissolving process is entropy favorable as well.