Validity Range
Usually, the Antoine equation cannot be used to describe the entire saturated vapour pressure curve from the triple point to the critical point, because it is not flexible enough. Therefore, multiple parameter sets for a single component are commonly used. A low-pressure parameter set is used to describe the vapour pressure curve up to the normal boiling point and the second set of parameters is used for the range from the normal boiling point to the critical point.
- Typical deviations of a parameter fit over the entire range (experimental data for Benzene)
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Deviations of a August equation fit (2 parameters)
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Deviations of a Antoine equation fit (3 parameters)
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Deviations of a DIPPR 101 equation fit (4 parameters)
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