The finding and conclusions in this report are those of the author(s) and do not necessarily represent the views of the Centers for Disease Control and Prevention/the Agency for Toxic Substances and Disease Registry.
Rate Constants for the Gas-Phase Reactions of Ozone and Nitrate Radicals with the Sesquiterpenes: Valencene and Farnesol
Article first published online: 24 JUN 2013
© 2013 Wiley Periodicals, Inc.
International Journal of Chemical Kinetics
Volume 45, Issue 8, pages 508–514, August 2013
How to Cite
Ham, J. E. (2013), Rate Constants for the Gas-Phase Reactions of Ozone and Nitrate Radicals with the Sesquiterpenes: Valencene and Farnesol. Int. J. Chem. Kinet., 45: 508–514. doi: 10.1002/kin.20789
This article is a US Government work and, as such, is in the public domain of the United States of America.
- Issue published online: 24 JUN 2013
- Article first published online: 24 JUN 2013
- Manuscript Accepted: 19 FEB 2013
- Manuscript Revised: 8 FEB 2013
- Manuscript Received: 16 NOV 2012
Sesquiterpenes are constituents of a variety of essential oils that are used in flavorings, perfumes, personal care, and cleaning products. Two sesquiterpenes that are commonly used as indoor fragrances are valencene and farnesol. Knowing the reaction rate constants of these chemicals with ozone (O3) and nitrate radical () is an important factor in determining their fate indoors. In this study, the bimolecular rate constants of , , , and were measured using the relative rate technique at 297 ± 3 K and 1 atm total pressure. Using the rate constants reported here and measured/modeled indoor concentrations of O3 and (20 ppb and 1 ppt, respectively), pseudo–first-order-rate lifetimes , , , and were determined.