Related Experiment Video
Updated: Mar 22, 2026

Surrogate Model Development for Digital Experiments in Welding
Published on: March 28, 2025
Web Thermo Tables - an On-Line Version of the TRC Thermodynamic Tables
Andrei Kazakov1, Chris D Muzny1, Robert D Chirico1
1National Institute of Standards and Technology, Boulder, CO 80305-3328, USA.
Abstract:
It has long been understood that availability of thermophysical and thermochemical property data is vital to scientific research and industrial design. For over 65 years, the Thermodynamics Research Center (TRC) has been publishing tables of critically evaluated data covering physical and thermodynamic properties of pure compounds, TRC Tables-Hydrocarbons and TRC Tables-Non-Hydrocarbons. Over their long history, the TRC Tables have always been valued as a reputable source of evaluated thermophysical and thermodynamic data. To facilitate more flexible, convenient, and up-to-date access to the data, here, we present the release of the on-line version of the TRC tables, Web Thermo Tables (WTT). Presently, WTT contains data for 7838 compounds and over 950,000 evaluated data points. The tabulated information includes critical properties, vapor pressures and boiling temperatures, phase transition properties, volumetric properties, heat capacities and derived properties, transport properties, reaction state-change properties, as well as index of refraction, surface tension, and speed of sound. Various search options and data plotting capabilities are provided via the Web interface. WTT are distributed through the NIST Standard Reference Data Program [1].
Related Concept Videos
Thermodynamic Potentials
Thermodynamic Systems
Consider an example of tea boiling in a kettle. The...
Thermodynamics: Activity Coefficient
The activity coefficient is a measure of the deviation from ideal behavior. When the ionic strength of the solution is minimal, the activity coefficient of an ionic species is close to unity, making...
Thermochemical Equations
Thermodynamic Background
Maxwell's Thermodynamic Relations
All thermodynamic potentials are exact differentials. Therefore, their second-order...

