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用热分析法仔细地测定了邻、对位氯甲苯和邻、对位硝基氯苯两个系统在不同组成时的步冷曲线,并进行了结晶试验,从而确认它们都属于简单的低共熔型相图,而不是一个有最低凝固点的完全互溶固溶体相图。文中还根据这类异构物的物理和热力学特性,解释了实验观察到的相图特征。
The step-cooling curves of ortho-para-toluidine and ortho- and para-nitrochlorobenzene in different compositions were carefully determined by the thermal analysis method and the crystallization tests were carried out to confirm that they all belong to a simple low total Rather than a phase diagram of a completely miscible solid solution with the lowest freezing point. According to the physical and thermodynamic properties of these isomers, we also explain the phase diagram features observed experimentally.