Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The stable phase equilibria of the ternary system CaCl2-SrCl2-H2O and the quaternary system KCl-CaCl2-SrCl2-H2O at 373 K were investigated by means of the isothermal dissolution equilibrium method. According to experimental results, the phase diagrams of the two systems were plotted. The results show that the ternary system CaCl2-SrCl2-H2O at 373 K belongs to the simple co-saturated type, without complex salt or solid solution. There are one invariant point, two univariant curves and two crystallization fields (where the solids are SrCl2*H2O and CaCl2*2H2O). The quaternary system KCl-CaCl2-SrCl2-H2O at 373 K has a double salt, Chlorocalcite (KCl*CaCl2). The phase diagram contains two invariant points, five univariant curves