The compressibility and surface tension product of molten salts

Products of the isothermal compressibility, kappa(T), and the surface tension, sigma, that have been discussed in the literature for liquids in general are shown for over 60 molten salts. The applications of the scaled particle theory of Mayer and the simplified corresponding states correlation of Harada et al. [Ind. Eng. Chem. Fund. 22, 116 (1983)] lead to calculated values twice as large as the experimental ones. Separate correlations in this paper of kappa(T) and of sigma with the cohesive energy density lead to kappa(T)sigma products that are commensurate with the experimental values for many of the molten salts, beyond the few 1:1 molten salts that have been dealt with previously. (C) 2013 AIP Publishing LLC.