Densities of sodium chloride in the concentration range (0.010 to 0.090 ( 0.001) mol • dm -3 have been determined in aqueous and aqueous maltose systems [(1.0, 3.0, 5.0, and 7.0) % w/v] at different temperatures [(298 to 323) K] with the interval of 5 K. Apparent molar volume (φ ν ), partial molar volume (φ ν °) and the ion-ion interaction parameter (S V ) have been calculated, using the Masson equation by applying linear regression analysis. Other parameters were also calculated, viz., transfer volume (φ ν °(tr) ) and partial molar expansibility (φ E °). Values of φ E °show the presence of caging or packing effects. The data obtained from volumetric studies have been used to investigate the ion-solvent interaction and ion-ion interaction. The structure-breaking capacity of sodium chloride has been inferred in aqueous and aqueous maltose systems from Hepler's criterion, i.e., (∂ 2 φ ν °/∂Τ 2 ) Ρ second derivative of partial molar volume with respect to temperature at constant pressure.