Thermodynamic equilibrium of hydroxyacetic acid in pure and binary solvent systems. (May 2017)

• Record Type: Journal Article
• Authors: Huang, Qiaoyin; Xie, Chuang; Li, Yang; Su, Nannan; Lou, Yajing; Hu, Xiaoxue; Wang, Yongli; Bao, Ying; Hou, Baohong
• Is Part Of: Journal of chemical thermodynamics. Volume 108(2017)
• Page Start: 76
• Page End: 83
• Publication Date: 2017-05
• Subjects: Hydroxyacetic acid -- Solubility -- Correlation -- Mixing properties; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2017.01.004
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: Solubility of hydroxyacetic acid in mono-solvents and binary solvent mixtures was measured. Modified Apelblat, NRTL and Wilson model were used to correlate the solubility data in pure solvents. CNIBS/R-K and Jouyban-Acree model were used to correlate the solubility in binary solvent mixtures. The mixing properties were calculated based on the NRTL model. Abstract: The solubility of hydroxyacetic acid in five pure organic solvents and two binary solvent mixtures were experimentally measured from 273.15 K to 313.15 K at atmospheric pressure ( p = 0.1 MPa) by using a dynamic method. The order of solubility in pure organic solvents is ethanol > isopropanol > n-butanol > acetonitrile > ethyl acetate within the investigated temperature range, except for temperature lower than 278 K where the solubility of HA in ethyl acetate is slightly larger than that in acetonitrile. Furthermore, the solubility data in pure solvents were correlated with the modified Apelblat model, NRTL model, and Wilson model and that in the binary solvents mixtures were fitted to the CNIBS/R-K model and Jouyban-Acree model. Finally, the mixing thermodynamic properties of hydroxyacetic acid in pure and binary solvent systems were calculated and discussed.