Home                                  Antoine Vapor Pressure Equation

The Antoine equation is derived from the Claussius-Clapeyron equation which describes the phase transition between two phases of matter. The Antoine equation describes the relation between saturated vapor pressure and temperature of a pure component. For solvent blends the Raoult's law applies.

P= Pressure in Hg mm, T=Temperature in C,
A, B, C = Constants, 
Enter Data   
Temperature, C  
Vapor Pressure, Hg mm  
Boiling Point at 760 mm Hg, C  
Heat of evaporation,  ΔHn, kJ/mol  

Automatic recalculation 

Last edited on:

October 15, 2010

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