(37e) Web Thermo Tables – an on-Line Database of Evaluated Thermochemical Properties for Pure Compounds

It has long been understood that experimental thermophysical and thermochemical property data are vital to scientific research and industrial design. For over 50 years, Thermodynamics Research Center (TRC) has been publishing the 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 reputable source of evaluated thermophysical and thermodynamic data. Starting from 2004, TRC was also issuing annual releases of the electronic version of these tables, WinTable, as a standalone Windows software package. To facilitate more flexible, convenient, and up-to-date access to the data, here, we present the release of on-line version of the TRC tables, Web Thermo Tables (WTT). WTT will be distributed to the users using Web-Oracle dissemination system recently established at NIST/Boulder. Presently, WTT contains data for 7729 compounds, and over 800,000 individual 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 Web interface. WTT will be distributed through the NIST Standard Reference Database Program.