New Experimental Data and Modeling for the Densities and Viscosities of the 1,4-Dioxane+1-Alkanols (C6 to C10) Mixtures

Densities and dynamic viscosities of 1,4-dioxane + 1-alkanol (hexanol to decanol) were measured at temperatures in the range of 293.15 K to 323.15 K and at 1 bar. CPA EoS was used to model the density of pure fluids and binary mixtures. It is important to note that no fitted parameter was used to correlate the experimental data for binary mixture. The advantage of using CPA EoS is the ability to consider hydrogen bonds between 1-alkanol molecules and between 1-alkanol molecules and 1,4-dioxane molecules. On the other hand, Eyring's theory was used as a fitting approach to correlate the dynamic viscosity of binary mixtures; the best results were obtained for 1,4-dioxane + 1-hexanol and 1,4-dioxane + 1-heptanol mixtures. Finally, the Redlich-Kister equation correctly correlated the properties of excess molar volume and deviation in viscosity using only three fitted parameters for each temperature.