Abstract Excess volume (VE123) and speed of sound (u123) data of three ternary mixtures of N-methylcyclohexylamine (NMC) (1) + p-xylene (2) + 1-alkanols (C3-C5) were determined as a function of composition at 303.15 K and atmospheric pressure. From the measured data, isentropic compressibility (ks123), deviation in isentropic compressibility (ks'123) and the quantity ∆ks123, the difference between measured value and that of computed from the constituent binary data were derived. The VE123 data of all the mixtures were analyzed in terms of different theoretical models. The experimental and predicted results indicate that the theoretical expressions give good estimation of the derived functions for the studied ternary systems. The excess and deviation properties were discussed in terms of intermolecular interactions prevailing between component molecules in the liquid mixtures.

中文翻译：

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含有 N-甲基环己胺、对二甲苯和 (C3-C5) 1-烷醇的三元混合物的过量体积、声速和等熵压缩数据

摘要 N-甲基环己胺 (NMC) (1) + 对二甲苯 (2) + 1-烷醇 (C3-C5) 的三种三元混合物的过量体积 (VE123) 和声速 (u123) 数据被确定为在 303.15 K 和大气压下组成。从测量数据、等熵压缩率（ks123）、等熵压缩率偏差（ks'123）和量Δks123，推导出测量值与从组成二进制数据计算的值之间的差异。根据不同的理论模型分析了所有混合物的 VE123 数据。实验和预测结果表明，理论表达式对所研究的三元系统的导出函数给出了很好的估计。