用浊点法－平衡釜法－变温法测定四组二元系互溶度数据

Determination of mutual solubility data for four binary systems by the cloud point equilibrium still-heterothermic methods

用浊点法、定组成变温法、平衡釜法３种实验方法，分别测定了糠醛－水二元物系在２０～９０℃之间、乙酸乙酯－水二元系在２５～６０℃之间以及乙酸甲酯－水在２５～５０℃之间不同温度下三组二元系互溶度数据。用平衡釜法同时测定了二氯甲烷－水二元物系在１５～４０℃之间的互溶度数据。分析了３种自制实验装置的结构对测定准确性的影响。比较了３种实验方法在结果准确性、方法的难易程度以及对不同物系的适用性方面的优缺点。

sing three experimental methods ofcloud point titration, constant compositionheterothermology, and equilibrium still, themutual solubility data were determined respectively for three binary systems at differenttemperatures: furfural-water system at 20-90℃, ethyl acetate - water at 25 -- 60℃,andmethyl acetate-water at 25-50℃. The mutual solubility data for the binarydichloromethane-water system were also determined at 15-40℃ by using the equilibriumstill. Effects of the structures of three selfmade experimental apparatus on determinationaccuracy were investigated. The virtus anddefects of the three methods were compared inaccuracy, difficulty, and availability for different systems.