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.