Volumetric properties of l-alanine, and l-valine in aqueous sucrose solutions at TÂ =Â (288.15 and 308.15) K

Densities of l-alanine, and l-valine have been measured at T = (288.15 and 308.15) K in aqueous sucrose solutions ranging from pure water to 25 mass % of sucrose. From these densities, apparent molar volumes (Vϕ) and limiting partial molar volumes (Vϕ∘) of each amino acid in various aqueous sucrose solutions have been evaluated. These data were combined with the earlier reported Vϕ∘ values of l-alanine, and l-valine in aqueous sucrose solutions at T = 298.15 K to calculate the (∂Vϕ∘/∂T)P values. The partial molar properties of transfer (ΔVϕ∘) from water to aqueous sucrose solutions at infinite dilution has been calculated. Transfer parameters have been interpreted in terms of solute-cosolute interactions on the basis of a cosphere overlap model. Pair and triplet interaction coefficients have also been calculated from transfer volume data.