Thermophysical Properties of Lithium Bromide + 1, 2-Propanediol Aqueous Solutions — Solubilities, Densities and Viscosities

摘要

The solubilities, densities and viscosities of lithium bromide (LiBr) + 1, 2-propanediol (HO-CH_2-CHOH-CH_3)rnaqueous solution (mass ratio of LiBr/HO-CH_2-CHOH-CH_3 = 3.5, 4.5 and 5.5) were measured in the mass fractionrnrange from 0.30 to 0.75. Solubility measurements were performed by the visual method in the temperature range ofrn(271.15 to 345.15) K. The density measurements were made using an automated vibrating tube density meter, andrnthe viscosity measurements were carried out with an automated falling-ball viscometer in the temperature range ofrn(293.15 to 363.15) K. The density and viscosity data were correlated with appropriate regression equations as arnfunction of the mass fraction and temperature. The maximum average absolute deviations (AAD) betweenrnexperimental and correlated data were 0.08% and 1.51% for densities and viscosities, respectively.