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Densities and Viscosities of Binary Mixtures Containing Ethyl Formate and 2-Alkanols: Friction Theory and Free Volume Theory

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Department of Chemistry, College of Science, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
*E-mail: [email protected]. Tel.: + 98-611-4431018.
Cite this: J. Chem. Eng. Data 2015, 60, 3, 714–720
Publication Date (Web):January 13, 2015
Copyright © 2015 American Chemical Society

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    The present study reports the densities and viscosities of mixing at various temperatures [(293.15 to 323.15) K] for mixtures composed of ethyl formate and 2-alkanols (from 2-propanol to 2-pentanol). From these measurements, excess molar volumes VmE and viscosity deviations Δη were calculated. These results were fitted to Redlich–Kister type polynomials. Positive excess molar volumes and negative viscosity deviations for studied mixtures indicate that no strong specific interactions occur in the mixtures. The data of viscosities have been used to study the performance of two viscosity models. The evaluated models are friction theory and free volume theory. Overall two models can describe the fluid viscosity with good accuracy. Results show that the performance of friction theory for correlating the viscosities is more satisfactory.

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    Excess molar volumes, viscosity deviations, and other useful data for the present paper. This material is available free of charge via the Internet at

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