Abstract: The solubility of p-aminophenol in water, ethanol and the mixture of water and ethanol was determined respectively by the test apparatus established in the lab. The experimental water-solubility of p-aminophenol is in good consistency with the literature data, which confirms the reliability of the experimental apparatus and method. Using solubility model and S-H activity coefficient equation, the parameters lij of the solubility equation were obtained by correlating the solubility data. The thermodynamic model of the calculating solubility of p-aminophenol was obtained, which prove to be useful in predicting the solubility of p-aminophenol in the mixture solvent at higher temperature. The correlated solubility model and calculated results are consistent well with the experimental data.

Key words: Solid-liquid equilibrium, p-Aminophenol, Solubility model

摘要： 用自建的溶解度测定装置，分别测定了对氨基苯酚在水、乙醇和乙醇-水混合溶剂中的溶解度。将对氨基苯酚在水中溶解度的实验值与文献值进行了比较，符合良好,验证了实验方法的可靠性。用溶解度模型和S-H 活度系数方程对实验数据进行回归,得出了模型计算所需要的二元交互作用参数lij，建立了计算对氨基苯酚溶解度的热力学模型。用该模型可对较高温度下对氨基苯酚在混合溶剂中的溶解度进行预测。回归及计算结果与实验值符合良好。

关键词: 固液平衡, 对氨基苯酚, 溶解度模型