This paper reports the variations of different physical and thermodynamic properties of a mixture of dipeptide metal salt in aqueous solutions as well as in aqueous ethanol mixtures. Specifically, the apparent molar volumes and apparent molar compressibilities of glycylglycine and Mn(COOCH3)(2) have been determined at T = (288.15 to 318.15) K, and the resulting data have been used to estimate the limiting volume (Phi(0)(V)) and compressibility (Phi(0)(K)). Their concentration variations are examined to study the effect due to solute-solute and solvent-solvent interactions. The resulting data have been used to interpret the volume and compressibility contributions of the components in terms of H-bonding and dipole dipole interactions. It was found that these interactions in aqueous solutions were measurably distinct in some cases from those in alcohols. An unusual behavior in the refractive index values indicates a measure of the relative extent of the polar domains.