Ultrasonic Study of Molecular Interactions in Binary Mixtures of Benzyl Benzoate with 2-alkaxyethanols at Various Temperatures

Abstract

Ultrasonic velocity, density and kinematic viscosity for the binary mixtures of benzyl benzoate with 2-methoxyethanol, 2-ethoxyethanol and 2-butoxyethanol measured experimentally over the entire composition range at constant temperatures 303.15, 313.15 and 323.15 K. Using this data calculated excess thermo dynamic parameters such as excess molar volume, excess free length, excess Gibbs activation energy, deviation in isentropic compressibility and deviation in kinematic viscosity. In the light of excess/deviation parameters estimated the molecular interaction between above binary mixtures. Excess molar volume, excess free length, deviation in isentropic compressibility and deviation in kinematic viscosity are fitted to Redlich-Kister polynomial equation of fourth order. An attempt is made to express the molecular interaction based on Partial molar volumes. In this study correlate the viscosities of binary liquid mixture of benzyl benzoate with 2-alkaxyethanols using equations Grunberg-Nissan (GN), Katti-Chowdary (KC), Tamura-Kurata (TK), Hind et al.(Hind), Auslander (Aus) and Jouyban–Acree (JA). The ultrasonic study reveals that the strength of molecular interactions at all the temperature follows the order BB+BE>BB+EE> BB+ME.