Reasons why azeotropes are not compounds- physical chemistry

Azeotropes are not compounds because

• they can be separated by physical means such as adsorption, fractional crystallization
• components react independently for example water in rectified sprit react with calcium oxide while ethanol does not, in solder tin reacts with dilute hydrochloric acid while lead does not.
• Composition of azeotropes vary with pressure
• In crystal the components of azeotropes are seen in the microscope as hetereginous