Refractive Indices of Binary Mixtures of Tetrahydrofuran with Aromatic Hydrocarbon at Temperatures from (288.15 to 318.15) K

The refractive indices n of pure tetrahydrofuran (THF), benzene, toluene, o -xylene, m -xylene, p -xylene, mesitylene, and those of their binary mixtures with THF as a common component, over the entire composition range expressed by mole fraction x 1 of THF, were measured at temperatures (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K. From the experimental data, the deviations in refractive index (Δ n ) have been calculated. It is observed that the extent of deviation in Δ n for these mixtures follows the sequence: benzene > toluene > p -xylene > m -xylene > o -xylene > mesitylene.