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EC number: 203-545-4
CAS number: 108-05-4
Yields of oxidation products of VAM by OH and NO3 radicals and by O3:
VAM + OH
Formic acetic anhydride
75 ± 7
96 ± 12
20 ± 3
90 ± 18
VAM + NO3
44 ± 6
46 ± 8
VAM + O3
97 ± 8
20 ± 6
78 ± 7
Detailed reaction mechanisms can be located in the publication itself.
Tropospheric lifetimes of VAM were estimated as 6 hours, 6 days and 5
days for TauOH, TauNO3 and TauO3, respectively. This demonstrates that
the reaction with OH radicals is likely to be the main tropospheric loss
process for VAM.
The atmospheric half-life of 14.6 hrs has been estimated for vinyl
acetate. This value is used in the EU RAR.
The atmospheric half-life of 14.6 h has been estimated for vinyl acetate and the rate constant as 2.3x10^-11 cm2 molecule^-1S^-1.
The study by Atkinson et al. (1987) is
considered reliable and this value is used in the EU RAR. The study by
Picquet et a. (2010) demonstrated that the reaction with OH radicals is
likely to be the main tropospheric loss process for VAM.
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