Densities, Refractive Indices, and Excess Properties of Binary Mixtures of 1,4-Dioxane with Benzene, Toluene, o-Xylene, m-Xylene, p-Xylene, and Mesitylene at Temperatures from (288.15 to 318.15) K

Abstract

The densities (ρ) and refractive indices (n) of binary mixtures of 1,4-dioxane with benzene, toluene, o-xylene, m-xylene, p-xylene, and mesitylene, including those of pure liquids, over the entire composition range expressed by mole fraction x 1 of 1,4-dioxane were measured at temperatures (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K under atmospheric pressure. From the experimental data, the excess molar volumes (V m E), deviations in refractive indices (Δn), partial molar volumes (V m,1 °∞ and V m,2 °∞), and excess partial molar volumes (V m,1 °E,∞ and V m,2 °E,∞) of the components at infinite dilution were calculated. The V m E values were negative for 1,4-dioxane + benzene, positive for 1,4-dioxane + o-xylene, + m-xylene, + p-xylene, and + mesitylene mixtures over the entire mole fraction range at all investigated temperatures, and exhibit a sigmoid trend for1,4-dioxane + toluene mixtures wherein V m E changes sign from positive to negative as the mole fraction of 1,4-dioxane in the mixture is increased. The results indicate the presence of weak interactions between 1,4-dioxane and aromatic hydrocarbon molecules. The deviations in V m E values follow the order benzene < toluene < p-xylene < m-xylene < o-xylene < mesitylene. It is observed that V m E values depend on the number and position of the methyl groups in these aromatic hydrocarbons.

Volumetric, Viscometric and Excess Properties of Binary Mixtures of 1-Iodobutane with Benzene, Toluene, o-Xylene, m-Xylene, p-Xylene, and Mesitylene at Temperatures from 303.15 to 313.15 K

“…The increase in values with the increase in number of -CH 3 groups implies that dipole-induced dipole interaction is weaker in higher hydrocarbon owing to its decreased polarizabilities with the increase of -CH 3 groups. A similar type of study was reported by Nain et al [16] for 1,4-dioxane and hydrocarbons. The observed values are in the order of Benzene < Toluene < p-xylene < m-xylene < o-xylene < Mesitylene Addition of two methyl groups in benzene ring in xylenes further exceeds the electron donating capacity, when compared to toluene, but at the same time steric (hindrance) repulsion between methyl groups of 1-iodobutane which hinders proper orientation that is expected to be more.…”

Volume-related properties of thiophene and furan-2-carboxaldehyde phenylhydrazone derivatives in DMSO: A discussion about non-intrinsic contribution

“…The comparison with the literature allowed us to determine a high reproducibility for benzene [28,29,30] and DMSO [31,26,32,33,27] (See Table 2). Additionally, the measurements at 657.7 nm were compared with those values of the literature deterined at the closed wavelength available, e.g.…”

"Excess and deviations properties for the binary solvent mixtures of tetrahydrofurfuryl alcohol with some aromatic hydrocarbons at 298.15K "

“…Lit. [ref] THFA 298.15 1.04761 1.04761 [25] 4.89883 4.89883 [25] 1.4532 1.45322 [25] Benzene 298.15 0.87372 0.87357 [26] 0.87361 [27] 0.87360 [28] 0.87342 [29] 0.59951 0.6038 [26] 0.604 [28] 1.4975 1.4980 [27] 1.4971 [29] Toluene 298.15 0.86224 0.86301 [26] 0.86236 [27] 0.86220 [28] 0.86226 [29] 0.55464 0.5540 [26] 0.556 [28] 1.4950 1.4942 [27] 1.4931 [29] p-xylene 298.15 0.85676 0.85670 [26] 0.85682 [27] 0.85662 [28] 0.85670 [29] 0.61225 0.6078 [26] 0.611 [28] 1.4945 1.4933 [27] 1.4926 [29] Exp. : experimental, Lit.…”