Fig. (1)
Semi-empirical density-based equations used in this study to correlate the solubility of solid solutes in scCO
2
comparison with the SRK CEoS.
Acrylamide+CO
2
;
bixin+CO
2
;
β-carotene+CO
2
and
C-tetramethylcalix[4]resorcinarene+CO
2
.
Acrylamide+CO2; 
bixin+CO2;
β-carotene+CO2 and 
C-tetramethylcalix[4]resorcinarene+CO2.