ThermodynamicData is based on a wide range of sources, with enhancement at Wolfram Research by both human and algorithmic processing.

Among principal sources for ThermodynamicData are:

Wolfram|Alpha curated data, 2024.

Lemmon, E.W., Huber, M.L., McLinden, M.O. NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 9.1, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2013 »

To report an error or suggest an addition to ThermodynamicData, contact the Wolfram Research ThermodynamicData team.