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    Theoretically, what is the lowest temperature at which liquid water can exist? Has it ever existed near to this temperature?

    Question #56264. Asked by gmackematix. (Mar 29 05 5:06 PM)


    dejavucub4

    		What kind of water? Pure? seawater? etc?

    Mar 29 05, 5:51 PM
    Baloo55th

    		Appears to be about -22 degrees C at 220MPa pressure. The boundary there is between the water and ice Ih and ice III. For more details, http://www.lsbu.ac.uk/water/phase.html As to have they done it, probably. They get up to all sorts of things....

    Mar 29 05, 6:01 PM
    Baloo55th

    		In a question like this, pure water is assumed. Seawater is a variable mixture of water and assorted salts (plus variable plankton and pollution, not to mention sharks...) and doesn't come into laboratory experimentation very much. Too imprecise....

    Mar 29 05, 6:04 PM
    gmackematix

    		It is possible for water to be taken to a temperature below that boundary found in the normal phase diagram, so an intelligent try there Baloo but no yay yet.

    Mar 30 05, 12:21 AM
    gmackematix

    		Oh, and yes I do mean pure water. There is another way to prevent it becoming solid ice while lowering the temperature besides changing the pressure.

    Mar 30 05, 12:26 AM

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