Study on solution properties of some industrially important solvents with an aromatic alcohol

Densities (ρ) of pure liquids and their mixtures have been measured at 298.15 K to 313.15 K and atmospheric pressure over the entire composition range for the binary mixtures of benzylalcohol, with 1,2-dichlorobenzene, 1,3-dichlorobenzene, and 1,2,4-trichlorobenzene by using Rudolph Research Analytical digital densitometer (DDH-2911 model). Further, the ultrasonic sound velocities for the above said mixtures were also measured at 303.15 K and 313.15 K. The measured density data were used to compute excess molar volumes (VE) and these were compared with Hwang equation. Isentropic compressibility (κS) and excess isentropic compressibilities (κSE) were evaluated from experimental sound velocity and density data. Moreover, the experimental sound velocities were analyzed in terms of theoretical models namely collision factor theory (CFT) and free length theory (FLT). The experimental results were discussed in terms of intermolecular interactions between component molecules.