Thermochemical Database (TDB) Project Guidelines

To ensure that the TDB reviews maintain consistency and a high level of quality, the review work is performed according to guidelines, which describe the details of the review work. It is mandatory for the review team members to follow the review procedures as given in the guidelines, as these constitute the quality assurance for the project.

The files below are available for downloading and/or viewing.

Please note that the TDB-2 guidelines for the extrapolation of redox potentials to zero ionic strength were updated in 2013 to align with the IUPAC definition for the standard state (Green Book 2nd edition, Chap. 2.11.iv, page 53): “The standard state for a solute in a liquid or solid solution is referenced to the ideal dilute behaviour of the solute. It is the (hypothetical) state of solute B at the standard molality m◦, standard pressure p◦ and exhibiting infinitely dilute solution behaviour”.

More information can be found at:

All books published between 2001-2008 follow the old TDB-2 guidelines.

Document File type Size (kB) Date of issue
TDB-0: The NEA Thermochemical Database (TDB) project PDF document, version 1.2120 Feb 25 2000
TDB-1: Guidelines for the review procedure and data selectionPDF document, version 1.244 Jan 6 2000
TDB-2: Guidelines for the extrapolation to zero ionic strengthPDF document, version 2900 18 June 2013
TDB-3: Guidelines for the assignment of uncertainties PDF document, version 1.2122 Jun 1 1999
TDB-4: Temperature corrections to thermodynamic data and enthalpy calculationsPDF document, version 1.2804 Oct 8 1999
TDB-5: Standards and conventions for TDB publicationsPDF document, version 1.2230 May 3 2000 (updated May 2015)
TDB-6: Guidelines for the independent peer review of TDB reports PDF document, version 1.298 Jun 1 1999

Related links

TDB introduction

Latest project news

General information

Other thermochemical database sites

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Related links

TDB phase II
TDB phase III
TDB phase IV
TDB phase V

Last reviewed: 12 April 2016