VirialV: For density of the gas phase.

d = 1000×Mw / Vm; where Mw is the molar mass and Vm is the molar volume.

Z = 1000×p×Vm/(R×T) = 1 + B/Vm + C/Vm2,

where B = åbi+1/T i, C = åci+1/T i, and R is the gas constant.

Evaluation Results:

The example is for fitted gas densities of pentane.