Modern extraction techniques can be based on dissolving material in supercritical fluids such as carbon dioxide. How high are pressure and density of carbon dioxide when the pressure and temperature are around the critical point. Repeat for ethyl alcohol.
CO2 :
Pc = 7.38 MPa, Tc = 304 K, vc = 0.00212 m3/kg
ρc = 1/vc = 1/0.00212 = 472 kg/m3
C2H5OH:
Pc = 6.14 MPa, Tc = 514 K, vc = 0.00363 m3/kg
ρc = 1/vc = 1/0.00363 = 275 kg/m3
