Registration Dossier
Registration Dossier
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EC number: 231-403-1 | CAS number: 7534-94-3
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Model calculation using EpiSuite 4.10 (AOP program v1.92, US-EPA, 2008):
Half-life for reaction with hydroxyl radicals (0.5E6 OH/cm3) = 14.91 h
Half-life for reaction with ozone (at 7E11 mol/cm3) = 24.18 h
Key value for chemical safety assessment
- Half-life in air:
- 14.91 h
- Degradation rate constant with OH radicals:
- 25.825 cm³ molecule-1 s-1
Additional information
Photodegradation in the atmosphere is expected to occur either by reaction with photo-chemically produced hydroxyl radicals or by reaction with ozone. For reaction with ozone an atmospheric half-life of approximately one day has been calculated for IBOMA using EpiWin v4.10 AOP v1.92 and for the reaction with hydroxyl radicals a half life of 14.9 h was estimated. The methacrylate esters do not possess UV-absorbing structures. Therefore, direct photolysis is not expected to occur to any significant degree.
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