This study demonstrates that SAFT EOS models might exhibit the practically unrealistic and
even non-physical predictions due to the two factors, namely the temperature dependencies
of a segment packing fraction and the very high-polynomial orders by volume. The first factor
is responsible for predicting the negative values of the heat capacities at very high pressures
and the intersections of isotherms at high densities. The very high-polynomial orders of
several SAFT EOS models result in prediction of the additional stable unrealistic critical …