CsCl-C2H5OH—H2O三元体系在35℃下平衡溶解度研究

采用自制的相平衡研究装置，测定了CsCl-C2H5OH-H2O三元体系在35℃下的平衡溶解度密度及折光率数据。在该实验中乙醇的质量分数在0—1．0范围内。同时也测定了不饱和三元体系在不同醇水比例下的密度和折光率值，并对其进行了拟合。实验结果表明，随乙醇质量分数的增加CsCl在水中的溶解度逐渐降低。并且在乙醇质量百分含量为10．73％-49.59％范围内体系出现了分层现象。用四元参数方程对溶解度进行了拟合。

The Equilibrium Solubility of Ternary System CsCl- C2H5OH-H2O at 35℃

The data of solubilities of cesium chloride in the system C2H5 OH- H2O are measured by using the device designed by the author and using accurate analytical method at 35℃ with mass fractions of ethanol in the range of 0 to 1.0. Density and refractive index are also determined for the same ternary system with varied unsaturated salt concentrations. Values for both experiment and theory are correlated with the sait concentrations and proportions of alcohol in the solutions. The equations proposed could also account for the saturated solutions. In all cases, the presence of ethanol significantly reduces the solubility of cesium chloride in aqueous solution, and the ternary system appears in two liquid phases： alcoholic phase and water phase, when the mass fractions of ethanol are in the range of 10.37% to 49.59%. The solubilities of the saturated solutions are fitted via polynomial equations as a function of the mass fraction of ethanol. Density and refractive index are also fitted via different equations.