中文摘要：

采用一套简单而又精确的相平衡研究装置，研究碳酸铯、氯化铯在乙醇水混合溶剂中的平衡溶解度，用Othmer-Tobias和Bancroft方程对该体系的饱和结线实验数据进行了关联．并且获得了两个液相的折光率，得到了体系的平衡互溶度和相关系，为进一步的应用研究提供了数据参考．

英文摘要：

Liquid-liquid equilibrium data of Cs^＋//CO3^2-,Cl^--C2H5OH-H2O system at 20℃ had been investigated by using a simple and accurate equilibrium apparatus. The saturated tie lines were described using the Othmer-Tobias and Bancroft equations. The mutual solubilities of salts in mixed solvent had been determined and the refractive index of the liquid phases was also determined.