ABSTRACT
A supercritical fluid is defined as one that is beyond its critical point and thus cannot be liquefied by a change in pressure. On a P−T plot, the supercritical region lies at the end of the vapor-liquid coexistence curve and is bounded by the lines P = Pc and T — Tc . In most applications, however, the compressed liquid region above the P = Pc line and to the left of the T = Tc line is also useful. Table 1 gives critical parameters for commonly used supercritical fluids.
