This mixture presents four azeotropes, whose compositions and boiling points are:

This Demonstration shows the density plot of the function . At azeotropes, and thus ; also for pure components (i.e., at the vertices of the triangle).

This mixture presents three binary azeotropes and a ternary azeotrope. Azeotropes and pure components can be readily identified by the orange-colored regions. You can drag the locator to display the corresponding value of the function . Locator coordinates (i.e., the mole fractions of chloroform and acetone in the liquid phase) are displayed in the upper-right corner. The last snapshot shows a situation where the value of is very small near the ternary azeotrope, .