This work reports densities and viscosities of four binary mixtures of aldehydes (C₇–C₁₀) + ethanol from 283.15 to 343.15 K at 0.1 MPa. A vibrating tube densimeter is used to measure the experimental densities, while a rolling ball microviscometer measures the dynamic viscosity. Excess molar volumes and viscosity deviations are calculated from the experimental densities and viscosities, respectively. Excess molar volumes show negative deviations, while viscosity deviations are positive. The behavior of these derived properties reflects the formation of hemiacetals by the interaction of the carbonyl and the hydroxyl group as reported in the literature. The aldehyde–alcohol interaction becomes weaker as the temperature rises, reflected in the data behavior. A Redlich–Kister equation is used to correlate both the excess molar volume and the viscosity deviation, within average absolute percentage deviations of 2.738 and 5.928%, respectively. Kinematic viscosities are correlated using the three-body and four-body McAllister equations and the Nava-Ríos equation. The average absolute percentage deviations from the experimental measurements are 2.07, 0.99, and 1.22%, respectively.

中文翻译：

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在 0.1 MPa 下 283.15 至 343.15 K 的正醛 + 乙醇二元液体混合物的密度和粘度

这项工作报告了四种醛的二元混合物（C ₇ –C ₁₀) + 乙醇，在 0.1 MPa 时从 283.15 到 343.15 K。振动管密度计用于测量实验密度，而滚球微粘度计测量动态粘度。过量的摩尔体积和粘度偏差分别从实验密度和粘度计算。过量的摩尔体积显示负偏差，而粘度偏差为正。这些衍生性质的行为反映了文献中报道的羰基和羟基相互作用形成半缩醛。随着温度升高，醛-醇相互作用变得更弱，这反映在数据行为中。Redlich-Kister 方程用于关联过量摩尔体积和粘度偏差，平均绝对百分比偏差为 2.738 和 5.928%，分别。使用三体和四体 McAllister 方程和 Nava-Ríos 方程关联运动粘度。与实验测量值的平均绝对百分比偏差分别为 2.07%、0.99% 和 1.22%。