Physicochemical Studies on Some Disaccharides (Sucrose, Lactose, Maltose) in Aqueous Media at 298.15 K

The ultrasonic velocity (U), density (ρ) and viscosity (η) have been measured in the binary systems of some disaccharides (Sucrose, lactose and maltose) in aqueous media at 298.15 K. The acoustical parameters such as adiabatic compressibility (β), free length (Lf), free volume (Vf), internal pressure (πi), acoustical impedance (Z), relative association (Ra), Rao's constant (R) and Wada's constant (W) were calculated. The results are interpreted in terms of molecular interaction and structure variation between the components of the mixtures.