Pressure-Temperature Nomograph Interactive Tool

 
 
Slider A is currently locked as the pivot. Slider B is currently locked as the pivot. Slider C is currently locked as the pivot.
A
Observed Boiling Point at Pressure "P" (mmHg)
B
Boiling Point Corrected
at 1 atm (760 mmHg)
C
Pressure "P" (mmHg)
1 atm = 760 mmHg

To find a boiling point under a set vacuum

Chart B - Enter the known boiling point (or slide the bar) and click the lock.

Chart C - Select the pressure you are working at (Torr or mmHg) and click the lock.

To find a corrected boiling point @760 mm

Chart A - Enter the observed boiling point (or slide the bar) and click the lock.

Chart C - Select the pressure you are working at (Torr or mmHg) and click the lock.

The Pressure-Temperature Nomograph tool is an application of the Clausius-Clapeyron Equation, which assumes the heat of vaporization is a constant over a pressure range. Antoine´s Equation gets around this assumption by using empirical data for each unique liquid under consideration.The interactive controls simplify calculations to improve the efficiency of your distillation or evaporation requirements.