Densities and Apparent Molar Volumes of Aqueous Solutions of Li2B4O7 and Their Correlation with the Pitzer Model

Densities of aqueous solutions of Li2B4O7 have been measured by using vibrating-tube densitometer over the temperature ranges 288.15 ≤ T/K ≤ 323.15 at 0.1 MPa pressure. The apparent molar volumes of Li2B4O7 derived from these data have been fitted using Pitzer ion interaction model. The volumetric ion interaction parameters of Li2B4O7 at various temperatures have been determined.