Title: collision density
Long Title: IUPAC Gold Book - collision density
DOI: 10.1351/goldbook.C01162
Status: current
Index: quantity

Definition
Total collision frequency for all molecules within a volume divided by that volume.

Related Term
- collision frequency: https://goldbook.iupac.org//terms/view/C01166

Source
- Green Book, 2nd ed., p. 56 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)

Related Reference
- PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 158 (https://doi.org/10.1351/pac199668010149)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/C01162/html
- json: https://goldbook.iupac.org/terms/view/C01162/json
- xml: https://goldbook.iupac.org/terms/view/C01162/xml

Citation: Citation: 'collision density' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.C01162
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-07-23T03:01:47+00:00