Physicochemical Analysis of Inorganic Systems

The results of phase equilibria predictions for the Na,K∥SO₄,CO₃,HCO₃,F-H₂O six-component system at 25°C in the trona crystallization region (Na₂CO₃ · NaHCO₃ · 2H₂O) by the translation method are considered. Trona, which is one of the equilibrium solid phases of the title system at 25°C, is involved in equilibria that correspond to 14 invariant points, 37 monovariant curves, and 28 divariant fields. These data were used to construct a fragment of the phase equilibrium diagram of the title system in the trona crystallization region.