Surface Tensions, Refractive Indexes and Excess Molar Volumes of Hexane + 1-Alkanol Mixtures at 298.15 K

Abstract

Surface tensions and refractive indexes for binary mixtures of {hexane + ethanol, + 1-propanol, + 1-butanol, + 1-pentanol, + 1-hexanol, + 1-heptanol, and + 1-octanol} have been measured at 298.15 K. Surface tension deviations and changes of refractive index have been also calculated. Excess molar volumes of {hexane + ethanol, + 1-pentanol, and + 1-hexanol} mixtures have been determined at 298.15 K from density data and compared with literature.

Density and surface tension variation with temperature for n-nonane+1-hexanol

“…1 shows the surface tensions of n-nonane + 1-hexanol at the three temperatures. The behaviour is standard, σ is observed to decrease with increasing T. In addition, and comparing with the literature values [13,21,22] the surface tension increases with the length of the n-alkane and 1-alkanol molecular chains (see Fig. 2).…”

“…The measured density and surface tension of the pure liquids (n-nonane and 1-hexanol) at 288.15, 298.15 and 308.15 K are listed in Table 1 together with those values found in the literature [10][11][12][13][14][15][16][17][18][19][20]. The agreement, within the experimental uncertainties for most values, ensures both the purity of the chemicals used and the experimental devices accuracy.…”

“…In Tables 2 and 3 experimental density and surface tension data of n-nonane + 1-hexanol at the temperatures cited are Table 1 Surface tension and density of n-nonane and 1-hexanol at several temperatures [13,14] 25.73 [13] 0.81534 [10] 25.67 [16] 25.69 [17] 25.79 [12] 25.81 [18,19] presented. Fig.…”

“…5 and 6, excess molar volumes [13] and surface tension deviations [13,22] of n-hexane, n-octane and n-nonane + 1-hexanol are plotted. As it can be seen in Fig.…”

Excess Molar Volumes, Surface Tensions, Viscocity Deviation and Ftir Spectroscopy of 1-Butanol-Ethyl Acetate Binary System Mixture

“…Anwar discussed changes in the values of excess thermodynamic properties with the change in composition and the temperature and their impact on hydrogen bonds and their effect on the mixing process [25]. Shekaari et al used the excess properties in studying the polymer's effectiveness and demonstrated increased effectiveness by increasing the molar mass of polymer [26]. From above survey we conclude that 1-Butanol and Ethyl acetate are important solvents and have been used in many industrial processes and there is a need for thermodynamic process data which is the basis for theoretical and design purposes.…”