Rackett2/7 Equation: For dsat of the Liquid phase
dsat =
M / {
R× Tc /
Pc×Zc(1-T/Tc)2/7}; where
M is the molar mass,
Tc,
Pc, and
Zc are the critical temperature, critical temperature, and critical compressibility factor, respectively.
The critical compressibility factor Zc is adjusted to optimize the fit of the equation.