ABSTRACT
The following table lists some useful carrier and modifier fluids for supercritical fluid extraction and chromatography, along with relevant properties. The critical properties are needed to determine successful fluid operating ranges. The fluids listed here have been either used or proposed for use in supercritical fluid chromatography or supercritical fluid extraction. The reader should also note that some of the fluids will undergo serious chemical degradation under near critical conditions while in contact with stainless steels and other common materials. The solubility parameter is defined as the square root of the cohesive energy density. Liquid modifiers that are commonly used to increase the effective polarity of supercritical fluids such as carbon dioxide frequently have inherent chemical instabilities that must be considered when designing an analysis, or in the interpretation of results.
