  The application of van der Waals equation of state to the asymmetric nuclear
matter is considered in a critical state region. The corrections to the van der
Waals pressure and free energy due to the Fermi statistics are obtained
starting from the Thomas--Fermi entropy expression which ensures the fulfilment
of Nernst theorem. The derived corrections account for the effective nucleon
mass and neutron-proton isotopic asymmetry. The parameters of van der Waals
equation of state are deduced taking the experimental value of critical
temperature for symmetric nuclear matter and testing the model of van der Waals
with statistics corrections included against the theory of Skyrme energy
density functional. Critical line in pressure-temperature-composition space is
considered. Incompressibility coefficient is determined along the critical line
as a function of nuclear matter composition. Jump in the value of specific heat
upon crossing critical line is discussed.
