The density (d) and ultrasonic velocity (v) values have been measured in the solvent ethanol containing 2-hydroxy substituted quinoxaline using different concentration at 305.85 K. The experimental data of density (d), ultrasonic velocity (v), adiabatic compressibility (), intermolecular free length (Lf), specific acoustic impedance (Z) and relative association (RA) were calculated. The results obtained in this study have been interpreted in terms of different interactions among solute-solute and solute-solvent.