# Miscibility of pairwise miscible liquids

If you have a mixture of 3 (or more) liquids which are "pairwise miscible", but which don't react with each other, does that guarantee that the mixture will only have one layer?

By "pairwise miscible", I mean that for every combination of two substances in the mixture, they are miscible with each other, i.e. soluble in all proportions.

For example, ethanol/water/acetone.

• I'll say very probably, but I'd bet that there is a black swan somewhere. – MaxW Dec 12 '15 at 21:36