Registration Dossier
Registration Dossier
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EC number: 208-156-3 | CAS number: 513-35-9
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
The kinetic rate constant for the reaction of 2-methylbut-2-ene with OH radicals is measured to be 68.9 E+12 cm3/mol/s, indicating that the atmospheric half-life would be 5.6 hours.
Key value for chemical safety assessment
- Half-life in air:
- 5.6 h
Additional information
Atkinson (1990) is a review article, with no data reported on the test methods or conditions of the original data source. Never-the-less, the data are taken from a published, peer-reviewed journal article and are considered to be suitable as supporting data for this endpoint. The measured results provide a rate constant of the reaction of 2 -methylbut-2 -ene with OH radicals of 68.9 E+12 cm3/mol/s. The results indicate that the substance would have an atmospheric half-life of approximately 5.6 hours and therefore would not be persistent in the atmospheric compartment.
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