Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 13
Articles | Volume 26, issue 13
https://doi.org/10.5194/acp-26-9277-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-9277-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 13
Research article
 | 
02 Jul 2026
Research article |  | 02 Jul 2026

Gas-phase degradation of the aroma compound ethyl butyrate and its methylated derivatives: UV-C photolysis and reactions with the hydroxyl radical

Finja Löher, Mark A. Blitz, Paul W. Seakins, Nicola Carslaw, and Terry J. Dillon

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Short summary
Ethyl butyrate and its methylated derivatives are volatile and commonly used aroma compounds, yet their gas-phase chemistry and air quality impact remain poorly characterised. In this work, we investigated the reactivity of these compounds experimentally. We determined temperature-dependent rate coefficients for their reaction with the main atmospheric oxidant, OH, and found that this was the dominant tropospheric loss process. In contrast, direct photolysis is negligible under most conditions.
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