Azeotrope tables are tables that show what mixture of different liquids will form an azeotrope. An azeotrope is a mixture of two or more liquids that boil at the same temperature and cannot be separated by distillation. The azeotrope tables show what ratio of the two liquids you need to get the azeotrope. For example, if you put together a liquid A and liquid B, you might need to have 65% of liquid A and 35% of liquid B to get an azeotrope. The azeotrope table shows the exact amount of each liquid you need.