##  [Antoine Equation](/antoine-equation) 

  ##  [Antoine Equation](https://engineering.quantumdictionary.io/antoine-equation-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

An empirical three‑parameter relation that represents the vapor pressure p of a pure substance as a function of temperature T in the form log10(p) = A − B/(C + T), where A, B and C are substance‑specific constants fitted to data over a limited temperature interval. It provides a compact interpolative formula, not a fundamental thermodynamic law.