Phase equilibria of long-chain polyunsaturated fish oil fatty acid ethyl esters and carbon dioxide, ethane, or ethylene at reduced gas temperatures of 1.03 and 1.13

Phase equilibria of a mixture of long-chain polyunsaturated fish oil fatty acid ethyl esters (FAEEs) with carbon dioxide were measured at 313.2 and 34 3.2 K, with ethane at 314.0 and 344.6 K, and with ethylene at 290.9 and 318 .6 K. The temperatures correspond to reduced gas temperatures of approximat ely 1.03 and 1.13. The experimental pressures range from 1.6 to 25 MPa. The FAEE mixture is rich in eicosapentaenoic acid ethyl ester (EPA, 52.5 wt.%) , and docosahexaenoic acid ethyl ester (DHA, 36.1 wt.%), and a total of 10 components were identified. The experimental temperatures, pressures, solub ilities, mass fractions, and calculated equilibrium ratios are reported in tables and graphs. The mass fractions and the equilibrium ratios are report ed on a solvent-free basis. (C) 1999 Elsevier Science B.V. All rights reser ved.