Degeneracy of the limited series of solid solutions in the NaCl-KCl-NH4Cl-H2O system at 50A°C

The phase equilibria in the NaCl-KCl-NH4Cl-H2O system at 50A degrees C were studied. Sodium chloride was shown to destroy the limited compositions of (K,NH4)Cl and (NH4,K)Cl solid solutions. As the NaCl content increased, the solid solutions of the limited series on the line of monovariant equilibria of (K,NH4)Cl and (NH4,K)Cl with saturated solutions degenerated and the triply saturated solution with the individual salt components NaCl, KCl, and NH4Cl was in nonvariant equilibrium.