# Does any compound exist with multiple liquid phases?

I've seen some phase diagrams and I found really interesting, how many exotic solid phases of most elements exist on higher pressure and temperature.

But I've seen always only a single liquid phase and also only a single gaseous phase.

The second is understable, but the first not. I think, if there is an unconventional potential energy field between the molecules, maybe it is not impossible.

Does any chemical compounds with multiple liquid phases exist?

If not, why not?

Extension: Well, superfluid helium is one of them. Maybe I don't formulate enough well, but I think on a distinct phase border, like between ice-I and water. As I know, the superfluid helium is a mix of its superfluid and normal fluid phases.

• Well, superfluid Helium is one of them. Maybe I don't formulate enough well, but I think on a distinct phase border, like between ice-I and water. As I know, the superfluid Helium is a mix of its superfluid and normal fluid phases. May 23 '16 at 3:25
• May 23 '16 at 9:27
• I suspect helium may be the only one. At sufficiently low temperatures, superfluid $\ce{^3 He}$ phase separates from $\ce{^4 He}$, producing two distinct superfluid phases, presumably with an almost invisble meniscus between them. Not sure whether this satisfies your requirements. May 23 '16 at 11:46
• @NicolauSakerNeto Both of He3 and He4 can be superfluid. May 23 '16 at 13:33