WTT User's Guide
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Model for Boiling Point

ln(p/) = ln(pc/) + Tc/T ×(a1×τ + a2×τ1.5 + a3×τ2.5 + a4×τ5)

where = 1 kPa, pc = critical pressure and τ = 1 - T/Tc

The basis for this functional form is discussed in [28] and [29].

Please note that the equations described above are expressed in terms of vapor pressure and not in the necessary inverted form. The parameters for a given fit can be found in the model summary for the associated phase boundary pressure contour.

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