ThermodynamicData Source Information
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, 2019.
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.