Measurement and correlation solubility and mixing properties of dimethyl succinylsuccinate in pure and mixture organic solvents from (278.15 to 333.15)K

The solubilities of dimethyl succinylsuccinate in tetrahydrofuran, acetic ether, acetone, acetonitrile, 1-propanol, ethanol and methanol pure solvents and tetrahydrofuran + methanol mixed solvents were measured within the temperature range 278.15 K to 333.15 K at atmospheric pressure. The solubility of dimethyl succinylsuccinate in those selected solvents increased with increasing temperature, and the dissolution in tetrahydrofuran is best. The semi-empirical Buchowski-Ksiazczak lambda h equation, the modified Apelblat equation and CNIBS/R-K equation were used to correlate with the solubility. In pure solvents the values of the sum of deviation (Sigma(%Dev)) for Apelblat and Buchowski-Ksiazczak lambda h equations are 1.1115 and 1.0383, respectively. In the tetrahydrofuran and methanol mixture, the sums of deviation (Sigma(%Dev)) for Apelblat equation, Buchowski-Ksiazczak lambda h equation and CNIBS/R-K equation are 0.7587, 0.7059 and 1.4090, respectively. By comparing models, the solubilities predicted by Buchowski-Ksiazczak lambda h equation and Apelblat equation is reasonable in mixture solvent and pure solvent, respectively. The thermodynamic properties of the solution process, including the enthalpy, and entropy were calculated by the van't Hoff analysis. The value of enthalpy and entropy were positive. (C) 2013 Elsevier B.V. All rights reserved.