Registration Dossier
Registration Dossier
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EC number: 202-476-7 | CAS number: 96-09-3
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Styrene oxide present in the gas-phase of the atmosphere will be degraded in a few days by reaction with OH radicals (t1/2 = 3.2 days).
Key value for chemical safety assessment
Additional information
The photodegradation of styrene oxide in air by reaction with OH radicals was calculated using EPIWIN v3.20, AOPWIN v1.92. Based on the reaction rate constant k(OH)=5.0572 x 10E-12 cm³/molecule x sec (at 25°C) and assuming a OH radical concentration of 5 x 10E5 radicals/cm³ (24 -h day) a half-life t1/2=76 h (3.2 d) can be calculated. This result indicates that styrene oxide present in the gas-phase of the atmosphere will bedegraded in a few days by reaction with OH radicals.
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