Determination and correlation of the solubility of tricin in water and ethanol mixtures

作者:Cheng Yan*; Wang Zhenhua; Ding Shangzhi; Li Jingchao
来源:Journal of Chemical Thermodynamics, 2015, 89: 89-92.
DOI:10.1016/j.jct.2015.04.037

摘要

The solubility of tricin in water and ethanol mixtures was measured over the temperature range of (288.15 to 328.15) K. The concentrations of tricin in the aqueous mixtures were assayed by the ultraviolet spectrophotometric method. The experimental solubility data indicated that the solubility of tricin increases with an increase in temperature and an enrichment in ethanol content. The two models, including the modified Apelblat equation and lambda h equation were used to correlate the experimental solubility data. The calculated solubility of tricin shows good agreement with the experimental results. Additionally, the estimation of thermodynamic properties including the activity coefficients, dissolution enthalpy, and entropy were obtained from the experimental data. Within the studied temperature range the dissolution process of tricin is endothermic, and the driving force is the entropy.