The vapor pressures of pure 2-methylpentanedioic acid dimethyl ester (2-MADE) and dimethyl adipate (DMA) at corresponding temperatures were measured by a rose-type vapor–liquid equilibrium still and compared with those in the literature. The isobaric vapor–liquid phase equilibrium (VLE) of binary mixtures of 2-MADE and DMA at 101.3, 50.0, 30.0, and 10.0 kPa were measured in the same still. It is verified by the Fredenslund test and the Van Ness test that all data are consistent with thermodynamics. NRTL, UNIQUAC, and Wilson models were used to regress the experimental data, and the deviation between the experimental data and the model was small. These models are suitable for the binary mixed system.

中文翻译：

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2-甲基戊二酸二甲酯和己二酸二甲酯的二元混合物在 101.3、50.0、30.0 和 10.0 kPa 下的等压汽液平衡

采用玫瑰型气液平衡蒸馏器测定了纯2-甲基戊二酸二甲酯（2-MADE）和己二酸二甲酯（DMA）在相应温度下的蒸气压，并与文献中的结果进行了比较。在同一蒸馏器中测量了 2-MADE 和 DMA 的二元混合物在 101.3、50.0、30.0 和 10.0 kPa 下的等压气液相平衡 (VLE)。经Fredenslund试验和Van Ness试验验证，所有数据均符合热力学。采用NRTL、UNIQUAC、Wilson模型对实验数据进行回归，实验数据与模型偏差较小。这些模型适用于二元混合系统。