As follows from figures 3 and 4, the pressure increasing brings
to formation of sharper extreme on Vi ¼ f ðx2Þ function and shifts
it to the region more saturated with the alcohol. At 100 MPa and
278.15 K the decrease of TBA partial molar volume reaches
19 cm3mol1; and even extreme, not being observed on
V2 ¼ f ðx2Þ dependence at 323.15 K, appears again with pressure
growth. This thermodynamic parameter changes with pressure
increasing in the same way as with temperature lowering. At
323.15 K on V1 ¼ f ðx2Þ functions the region of baric inversion occurs
at x2 0.5, in the other word, the region where V1 value does
not depend on temperature. The same inversion region was observed
also at atmospheric pressure