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Boiling points

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Boiling points diagram
The vapor pressure of most liquids has a fairly predictable temperature-dependence, so from one boiling point measurement it is possible to give a good estimation of the boiling point at other pressures (or boiling pressure at other temperatures).
Boiling point is
at pressure
Temperature x
Pressure y

Boiling pressure at temp. x
Boiling temp. at pressure y
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This calc can be extremely useful in designing experimental processes or making safety assessments.
Enter the known boiling point at a known pressure (which will often be 1 atm). Then enter the temperature or pressure you are interested in and the calc will give the estimated pressure or temperature that boiling will take place.