Specifically, they form a minimum-boiling azeotrope. This means that the boiling point of the azeotropic mixture is lower than the boiling point of either pure component.

Here's some information about this azeotrope:

* Composition: The azeotrope forms at approximately 60.8% toluene and 39.2% ethyl acetate by weight.

* Boiling point: The azeotrope boils at approximately 89.9 °C (191.8 °F). This is lower than the boiling point of pure toluene (110.6 °C) and pure ethyl acetate (77.1 °C).

It's important to note that the formation of azeotropes can affect the separation of mixtures via distillation. Since the azeotrope boils at a single temperature, it can be difficult to further separate the components using traditional distillation techniques.