azeotrope
/əˈziːəˌtroʊp/
noun
- A mixture of two or more liquids that boils at a constant temperature and has the same composition in liquid and vapor form.
- Ethanol and water form an azeotrope that cannot be separated by simple distillation.
- The azeotrope of isopropyl alcohol and water boils at a lower temperature than either pure liquid.
- Chemists use special techniques to break an azeotrope and purify the components.