Abstract
The densities and kinematic viscosities of 10 binary regular solutions were measured over the entire composition range at 308.15 and 313.15 K. The excess volumes of mixing, absolute viscosities and viscosity deviations were calculated from the experimental data. The viscosity deviations were found to be negative for eight systems. For the two systems, heptane + octane and toluene + ethylbenzene, the viscosity deviations are scattered around zero. The data reported herein were used to examine the predictive capabilities of some viscosity-prediction models; namely, the predictive version of the McAllister model, the GC-UNIMOD model, the generalized corresponding states principle method, and the Allan and Teja correlation. The results of testing these models revealed that the McAllister model predicts the data much better than the other models and has the lowest absolute average deviation of 1.7%.
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