Betterton, Eric A. and Hoffmann, Michael R. (1988) Henry's law constants of some environmentally important aldehydes. Environmental Science and Technology, 22 (12). pp. 1415-1418. ISSN 0013-936X. doi:10.1021/es00177a004. https://resolver.caltech.edu/CaltechAUTHORS:20150814-112038487
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Abstract
The Henry’s law constants of seven aldehydes have been determined as a function of temperature by bubble-column and by head-space techniques. The compounds were chosen for their potential importance in the polluted troposphere and to allow structure-reactivity patterns to be investigated. The results (at 25 ºC) are as follows (in units of M atm^(-1)): chloral, 3.44 X 10^5; glyoxal, ≥ 13 X 10^5; methylglyoxal, 3.71 X 10^3; formaldehyde, 2.97 X 10^3; benzaldehyde, 3.74 X 10^1; hydroxyacetaldehyde, 4.14 X 10^4; acetaldehyde, 1.14 X 10^1. A plot of Taft’s parameter, ∑σ^*, vs log H^* (the apparent Henry’s law constant) gives a straight line with a slope of 1.72. H^* for formaldehyde is anomalously high, as expected, but the extremely high value for hydroxyacetaldehyde was unexpected and may indicate that α-hydroxy-substituted aldehydes could have an unusually high affinity for the aqueous phase. The intrinsic Henry’s law constants, H, corrected for hydration, do not show a clear structure-reactivity pattern for this series of aldehydes.
| Item Type: | Article | |||||||||
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| Additional Information: | © 1988 American Chemical Society. Received for review January 27,1988. Accepted May 31,1988. | |||||||||
| Issue or Number: | 12 | |||||||||
| DOI: | 10.1021/es00177a004 | |||||||||
| Record Number: | CaltechAUTHORS:20150814-112038487 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150814-112038487 | |||||||||
| Official Citation: | Henry's law constants of some environmentally important aldehydes Eric A. Betterton and Michael R. Hoffmann Environmental Science & Technology 1988 22 (12), 1415-1418 DOI: 10.1021/es00177a004 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 59538 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 14 Aug 2015 19:34 | |||||||||
| Last Modified: | 10 Nov 2021 22:22 |
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