Tool Box

# Antoine's coefficients conversion

 Input : Formula scale log (base 10) ln (base e) Pressure Unit mmHg Bar mBar Pa kPa psia Antoine A Antoine B Antoine C Temperature min Temperature max Temperature Unit Kelvin Celsius Fahrenheit Rankine Output : Formula scale log (base 10) ln (base e) Pressure Unit mmHg Bar mBar Pa kPa psia Temperature Unit Kelvin Celsius Fahrenheit Rankine Results : Antoine A Antoine B Antoine C

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# How to use this conversion tool

This tool converts Antoine's coefficients from formula log10(Pv)=A-B/(C+T) (log base 10) to formula ln(Pv)=A-B/(C+T) (natural log) and the other way round.

Antoine's coefficients to fill in are those corresponding to the chosen input formula and that give a result using input unit.

Temperature range must be a valid range for Antoine's coefficients filled in for input. The default range (283-303K) can be used when input Antoine's coefficients are valid for ambient temperature.

Output parameters (Formula scale and Pressure unit) describe the format of the formula to be used with calculated Antoine's coefficients and the unit of the result of this calculation.

Example :

Antoine's coefficients for ethanol with formula log10(P)=A-B/(C+T) (P in bar, T in kelvin) are : A=5.37229, B=1670.409, C=-40.191 for the temperature range 273 to 351 K.
Equivalent coefficients for formula ln(P)=A-B/(C+T) (P in mmHg, T in kelvin) are : A=18.99031, B=3846.25886, C=-40.191.
For ethanol at 283K, P = 10(5.37229-1670.409/(-40.191+283)) = 0.0311 bar which corresponds to P = e(18.99031-3846.25886/(-40.191+283)) = 23.3275 mmHg.

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