Phase Equilibrium in Ternary System SrCl_2-CaCl_2-H_2O at 25℃

Phase equilibrium in the ternary system SrCl2-CaCl2-H2O at 25 ℃ was studied by is othermal method.Physicochemical properties(density and refractive index) of the solution were also determined.The solid phaseswere confirmed together by wet residue method,microscope observed method and XRD.The phase diagram was plotted according to the experimental values.In the equilibrium phase diagram of SrCl2-CaCl2-H2O,there arethree invariant points,four univariant curves and four regions of crystallization:CaCl2.6H2O,calcium chloride base solid solution,strontium chloride base solid solution and SrCl2.6H2O.