Database of Termolecular Reactions

A curated collection of experimental data on three-body (termolecular) reactions, compiled by the JPR Group.

Why Termolecular Reactions Matter

Termolecular reactions play a vital role in atmospheric chemistry, combustion processes, and interstellar environments. This is a free and open source database that provides data on over 250 termolecular reactions across a variety of temperatures with proper sources provided.

Interesting Reactions in our Database

O + O + M → O₂ + M

Key for atmospheric oxygen formation. Data available across 200–1200 K.

H + O₂ + M → HO₂ + M

Critical in combustion reactions. Temperature-dependent rates included.

N + N + M → N₂ + M

Important for interstellar nitrogen balance. Data curated from multiple sources.

CH₃ + CH₃ + M → C₂H₆ + M

Central in combustion kinetics. Well-studied in lab conditions.

How to Use

Navigate using the menu above or the “Explore the Database” button. For explanations about how to read the data navigate over to the explanation section.