Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

Apparent molar volumes V were determined for aqueous adonitol, dulcitol, glycerol, meso-erythritol, myo-inositol, D-sorbitol, and xylitol at temperatures from (278.15 to 368.15) K and at the pressure 0.35 MPa, and apparent molar heat capacities Cp, of the same solutions were determined at temperatures from (278.15 to 363.15) K at the same pressure. Molalities m/(mol Ae kg_1) of the solutions were in the range (0.02 6 m 6 3.2) for adonitol, (0.02 6 m 6 0.15) for dulcitol, (0.02 6 m 6 5.0) for glycerol, (0.02 6 m 6 3.0) for meso-erythritol, (0.02 6 m 6 0.5) for myo-inositol, (0.02 6 m 6 2.0) for D-sorbitol, and (0.02 6 m 6 2.7) for xylitol. A vibrating tube densimeter was used to obtain solution densities and a fixed-cell temperature scanning calorimeter was used to obtain heat capacities. Values of V and Cp,for these sugar alcohols are discussed relative to one another and compared to values from the literature, where available.