Equation of State and Thermodynamic Properties of Molten Potassium Chloride to 1320 K and 6 Kbar

Abstract

From the Tait equation an equation of state containing five adjustable parameters was developed which fits experimental density data of molten potassium chloride to 1320 K and 6 kbar with a standard deviation of 0.04%. The thermal expansion coefficient, isothermal compressibility, internal pressure, and molar heat capacities at constant pressure and constant volume were calculated as functions of pressure and temperature from the equation of state and were compared with computer simulation results. A method for an estimate of high-pressure PVT data for molten salts is suggested which yields results superior to the best computed data presently available. © 1976, Verlag der Zeitschrift für Naturforschung. All rights reserved.