Movie 19: Ternary Phase Diagram: Partial Solubility
A ternary phase diagram has three components, A, B and C. In this model, mixing A with B causes freezing point depression, as for B with C and C with A. In addition, A is partially soluble in B and C, B is partially soluble in A and C, and C is partially soluble in A and B. (Partial solubility is also called partial miscibility.) The greatest freezing point depression occurs when we have all three components present.