Measurements of the Henry's Law Coefficients of 2-Methyl-3-buten-2-ol, Methacrolein, and Methylvinyl Ketone |
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| Authors: | Laura T Iraci Bradly M Baker Geoffrey S Tyndall John J Orlando |
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| Institution: | (1) Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO, U.S.A |
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| Abstract: | Using an equilibrium headspace technique, Henry's law coefficients were measured for methacrolein (H = 6.5 ± 0.7 M atm-1) and methylvinyl ketone (41 ± 7.0 M atm-1) in water at 25 °C. In addition, 2-methyl-3-buten-2-ol was studied at 30 °C in water and in an aqueous ionic solution representative of plant tissue. Similar values were found in deionized water (65 ± 3.5 M atm-1) and in a 0.05 mol kg-1 Ca2+, K+, NO3-, SO42- solution (62 ± 0.8 M atm-1). These Henry's Law coefficients are too small to allow for significant partitioning of methacrolein, methylvinyl ketone or methylbutenol into cloud water under equilibrium conditions. |
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| Keywords: | Henry's law constant partition coefficient methylbutenol methacrolein 2-methyl-2-propenal methyl vinyl ketone 3-buten-2-one |
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