Provides thermodynamic databases, data assessment, and consulting services to companies working with a variety of commercial and industrial materials. Information on training courses, models, downloads, example applications, and leasing databases.

Tables of chemical data for Fundamental Physical Constants, Relative Atomic Masses of the Chemical Elements, Molar Thermodynamic Properties of Pure Substances, Molar Thermodynamic Properties of Aqueous Solutes, Ionization Constants of Aqueous Monoprotic Acids, Ionization Constants of Aqueous Polyprotic Acids, Solubility Products of Slightly Soluble Salts, Stability Constants of Aqueous Complex Ions, and Aqueous Standard Reduction Potentials.

Chemical property data (such as reaction rate constants, and redox potentials,) historic bibliographic information from the RCDC bibliographic database, and recent papers in radiation chemistry and photochemistry. Also includes an on-line continuation of the Biweekly List of Papers in Radiation Chemistry and Photochemistry.

Source of thermodynamic data useful in handling phase transitions. The data are given as a function of temperature and pressure for single components and mixtures. Also links to Bubble Points, Dew Points, and Enthalpy-Pressure Diagram Pages.

Extensible Computational Chemistry Environment Basis Set Database, Version 8/01/01, as developed and distributed by the Molecular Science Computing Facility, Environmental and Molecular Sciences Laboratory which is part of the Pacific Northwest Laboratory.

Energy-consistent pseudopotentials of the Stuttgart/Bonn group (semi-local pseudopotentials adjusted to reproduce atomic valence-energy spectra) for every element in the periodical table. Provided by the University of Stuffgart.

Single page of several hundred chemicals, sorted by name, with associated dielectric constant.

The values of the fundamental physical constants provided at this site are recommended for international use by CODATA and are the latest available.

Database of molecules with well established heat of formation, no atoms with atomic number greater than 17 (Chlorine,) and six or fewer heavy atoms and twenty or fewer total atoms.

Database holding information on fundamental physical constants, atomic spectra, molecular spectroscopic data, ionization data, X-Ray and Gamma-Ray data, radiation dosimetry data, nuclear physics data, and condensed matter physics data.