Solubility of Echium, Borage, and Lunaria Seed Oils in Compressed CO₂

Abstract

The solubility of borage, echium, and lunaria oils in compressed CO 2 was measured using the dynamic method. Pressure and temperature were varied from (60 to 300) bar and (10 to 55) °C, respectively. The solubilities were compared to those of other vegetable oils and were correlated using the density-based model proposed by Chrastil. As predicted by the model, a linear relationship between the logarithm of solubility and the logarithm of solvent density was obtained. Average deviation between measured and calculated solubility did not exceed 14%.