J NIST-JANAF

The following is an exercept from the introduction of the 4th edition of NIST-JANAF Thermochemical Tables from the Journal of Physical and Chemical Reference Data.

The Fourth Edition to the NIST-JANAF Thermochemical Tables has been assembled under the sponsorship of the Standard Reference Data Program at the National Institute of Standards and Technology [NIST]. It contains tables of recommended temperature-dependent values for the standard enthalpy of formation, Gibbs (free) energy of formation, the logarithm of the equilibrium constant of formation, the heat capacity, entropy, enthalpy, and Gibbs energy function for 48 elements and many of their compounds. This publication is a current collection of all tables issued through 1997 under contracts with the U.S. Department of Energy and the U.S. Air Force Office of Scientific Research, NASA, the JANNAF Combustion Subcommittee, and the Standard Reference Data Program.

The data is available online at https://janaf.nist.gov/.