Vapor Pressure Calculator — Free Online Tool
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Vapor Pressure Calculator

Calculate vapor pressure of liquids using the Antoine Equation

Antoine Equation: log10(P) = A − [B / (T + C)]
Calculates saturation vapor pressure as a function of temperature (°C) using empirical constants.
Substance & Temperature Parameters

Calculation Results

⚠️ Antoine equation constants are valid only within specific temperature ranges specified for each chemical. Extrapolating outside these temperature limits can yield significant calculation errors.

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