Ultrasonic velocity, viscosity and density of aqueous L- Glutamic acid monosodium salt of different concentrations (0.2-1) mol/kg has been measured at 298.15K and 300.15K. A considerable effect of temperature and concentration has been observed on these basic parameters. Using experimentally measured parameters, various derived acoustical parameters such as adiabatic compressibility, acoustic impedance, free length, free volume, internal pressure, molar sound velocity, relaxation time and Gibbs free energy were calculated. These parameters have been used to discuss the nature, strength and order of intermolecular interactions in the present system.