COSTALD: For dsat of the Liquid phase

dsat = M / [V0(1 - 1.52816×τ1/3 + 1.43907×τ2/3 - 0.81446×τ4/3)
{1 - Ω (-0.296123 + 0.386914 ×t - 0.0427258×t1/2 - 0.0480645×t1/3)}]; where t = T/Tc, τ = 1 - t, and Tc is the critical temperature.