IUPAC: Subcommittee for Gas Kinetic Data Evaluation
IUPAC Subcommittee on Gas Kinetic Data Evaluation
Providing evaluated kinetic data on the web since 1999.

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Evaluated Kinetic Data

The IUPAC KInetics Data base has been transferred to the CNRS ETHER data centre in Paris. The Cambridge site for the IUPAC Kinetics data is no longer current and to view the tables and datasheets go to http://iupac.pole-ether.fr Please click here to be redirected now

This website provides kinetic and photochemical data evaluated by the IUPAC Subcommittee for Gas Kinetic Data Evaluation. Also see Atmospheric Chemistry and Physics publications:
Volumes 1-5 in Atmospheric Chemistry and Physics (ACP)

Summary tables

We have summary tables of recommended data for the reactions listed in the ACP volumes. Where published data has been superceded by new evaluations on the website this is noted. We recommend the use of Firefox to ensure these XML files view correctly. These summary data will be updated frequently.


Search all gas-phase reactions by species name, formula, InChI or SMILES.

View most recently added/changed datasheets.

Gas-phase reactions

Photolysis reactions

Heterogeneous reactions on solids.

Heterogeneous reactions on liquids.

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Supplementary Information
  • Guide to the datasheets (Word or PDF)
  • Introduction to the heterogeneous datasheets (Word or PDF)  (updated Oct 2009)
  • Thermodynamic data guide (Word or PDF)
  • Order of reactions within a family (Word or PDF)
    Summary data can be downloaded for personal use only and must not be retransmitted or disseminated either electronically or in hardcopy without explicit written permission.

    Website by Glenn Carver, Robert Hynes, Hannah Barjat and R. Anthony Cox. The master website is hosted by the Centre for Atmospheric Science, Cambridge University, UK. No part of this website, images or text, may be reproduced anywhere except with explicit written permission. ©