Solvation Thermodynamics

Summary

Using data from REFPROP 8.0, thermodynamic quantities for the self-solvation of 76 pure fluids were computed. These quantities are valuable for comparison to similar data derived from experiment, for use in computations which require solvation thermodynamic data, and for calibrating theoretical models. As the data were derived from a single, high-quality source, REFPROP, it is expected that this data is among the most consistent and highest-quality data of its kind currently available.

Description

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Solvation thermodynamics data are essential in the characterization and interpretation of any process carried out in the liquid phase. The data have application in the study of biochemical processes such as protein folding and protein-protein association in aqueous fluids and are useful as benchmarks against which future experimental determinations and theoretical predictions may be compared.

The goal of this research is to provide a consistent, high-quality compilation of solvation thermodynamics data for a set of pure fluids. This is accomplished by using the standard definition of the solvation process to permit solvation thermodynamic quantities to be derived from the fluid property data obtained from REFPROP.

The previous results are currently being updated to be consistent with the latest REFPROP 9.0 models, and will be published in a suitable journal.

Major Accomplishments

• developed code to evaluate solvation thermodynamic properties using REFPROP data
• produced solvation thermodynamic property data for 76 pure fluids
• a manuscript containing all of the data and fits to the data has been prepared as a NIST Special Publication