Van der Waals constants (data page)

The following table lists the Van der Waals constants (from the Van der Waals equation) for a number of common gases and volatile liquids.

To convert from $$L^2bar/mol^2$$ to $$L^2 kPa/mol^2$$, multiply by 100. To convert from $$L^2bar/mol^2$$ to $$m^6 Pa/mol^2$$, divide by 10. To convert from $$L/mol$$ to $$m^3/mol$$, divide by 1000.

Units
1 J·m3/mol2 = 1 m6·Pa/mol2 = 10 L2·bar/mol2

1 L2atm/mol2 = 0.101325 J·m3/mol2 = 0.101325 Pa·m6/mol2

1 dm3/mol = 1 L/mol = 1 m3/kmol = 0.001 m3/mol (where kmol is kilomoles = 1000 moles)