Phase Equilibria in the Quaternary System LiCl–NaCl–SrCl₂–H₂O at 273 and 323 K

Abstract

Phase equilibria in the quaternary system LiCl− NaCl−SrCl 2 −H 2 O were measured by the isothermal dissolution equilibrium method at 273 and 323 K. The solubility diagrams and water content diagrams of the quaternary system were constructed. The phase diagrams of the quaternary systems LiCl−NaCl−SrCl 2 − H 2 O at 273 and 323 K are of the hydrate type and neither double salts nor solid solutions are found. The phase diagram of the quaternary system LiCl−NaCl−SrCl 2 −H 2 O at 273 K contains two invariant points, five univariate curves, and four crystallization fields, which correspond to SrCl 2 •6H 2 O, SrCl 2 •2H 2 O, LiCl•2H 2 O, and NaCl. The quaternary system LiCl−NaCl−SrCl 2 −H 2 O at 323 K has three invariant points, seven univariate curves, and five crystallization fields corresponding to SrCl