A. Raguraman, N. Santhi, Acoustical Studies on Molecular Interaction of 1,3,4-Pyrazoline Derivatives Using Ultrasonic Technique at 303.15 K, Volume 39, International Letters of Chemistry, Physics and Astronomy (Volume 39)
https://www.scipress.com/ILCPA.39.100
Abstract:
    The acoustical parameters for the binary liquid mixtures containing Pyrazoline derivatives in DMF have been estimated at 303.15 K, from the measured values of ultrasonic velocity (U), density (ρ) and viscosity (η). From these data some of acoustical parameters such as adiabatic compressibility (β), free length (L<sub>f</sub>), acoustic impedance (Z), Rao’s constant (R), molar compressibility (W), relaxation time (τ), free volume (V<sub>f</sub>) and internal pressure (π<sub>i</sub>), etc., have been computed using the standard relations. The results have been discussed in terms of molecular interactions.
Keywords:
    Binary Mixture, Density, Free Length, Molecular Interaction, Ultrasonic Velocity, Viscosity