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by _aavaa_ 1421 days ago
The most common chemical is ethanol. What you're describing is an azeotrope [1].

Aside from the ones that will boil together with water are those that will boil off before the water (methanol is the other common example that comes in practice). If you have any that boil off before water you have to know at what point it's safe to start condensing the vapour and storing it.

[1] https://en.wikipedia.org/wiki/Azeotrope