Solubility and Solvent Effect of 1-(2-Bromo-phenyl)-pyrrole-2,5-dione in 14 Pure Solvents from 278.15 to 323.15 K

The solubilities of 1-(2-bromo-phenyl)-pyrrole-2,5-dione in 14 pure solvents including isopropanol, methanol, isobutanol, ethanol, n-propanol, n-butanol, ethylene glycol (EG), cyclohexane, acetone, acetonitrile, N-methyl-2-pyrrolidinone (NMP), N,N-dimethyl formamide (DMF), water, and dimethylsulfoxide (DMSO) were determined through the shake-flask method over the temperature range from 278.15 to 323.15 K under 101.2 kPa. The values of the mole fraction solubility of 1-(2-bromo-phenyl)-pyrrole-2,5-dione in above pure solvents increased as the temperature increased and presented the following order in different pure solvents: DMF > NMP > DMSO > acetone > acetonitrile > methanol > ethanol > isopropanol > n-propanol > isobutanol > n-butanol > EG > cyclohexane > water. They were mathematically correlated by the NRTL model, lambda h equation, Wilson model, and Apelblat equation. The obtained values of the maximum root-mean-square deviation and relative average deviation were, respectively, 51.62 x 10(-4) and 4.19 x 10(-2). By the relationship examination of the Kamlet and Taft linear solvation energy of the solvent effect, the type and degree of the solvent-solvent and solute-solvent interactions were identified. In addition, the mixing properties, reduced excess enthalpy, and activity coefficient under infinitesimal concentrations were obtained in terms of the Wilson model.