Phase Equilibria in the Quinary Na, Mg//Cl, SO4, NO3-H2O System at 25°C

Phase equilibria in the quinary Na, Mg//Cl, SO4, NO3-H2O system at 25 degrees C were determined and a total phase equilibria diagram of the system was constructed employing the translation method. There are eight invariant points, 25 monovariant curves, and 27 divariant fields in this system. Eighteen of the latter curves form due to the extension of quaternary points into overall composition while the other seven curves form between the quinary points. Diagram was fragmented into separate regions. The part of the system saturated with Halite agrees well with available literature data.