Figure 3.10. H2O-KCl equilibrium phase diagram. Phases at equilibrium for the system H2O-KCl are shown as a function of chemical composition (weight percent KCl) and temperature. The blue area indicates temperatures and compositions for which a single phase, brine, is present at equilibrium. The crystalline phases are the minerals ice (H2) and sylvite (KCl).
Wt.% KCl:
Temperature:
Wt.% Brine:
Wt.% Ice:
Wt.% Sylvite:
