Registration Dossier
Registration Dossier
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EC number: 202-784-1 | CAS number: 99-75-2
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
QSAR estimated atmospheric half-lives are between 5.17 and 10.6 days
Key value for chemical safety assessment
- Half-life in air:
- 10.6 d
Additional information
Direct photolysis half-life of methyl-p-toluate was estimated by QSAR (US EPA Estimation Program Interface (EPI) Suite (2000 and 2012) AOPWIN v1.90 and v1.91, EPA and Syracuse Research Corporation) to be 64.5 hours (i.e. 5.37 days with 12h/d).
In a project performed by RIVM (1997) two different QSAR models were applied to yield atmospheric degradation half-lives for methyl-p-toluate based on OH-radical induced reaction mechanism. According to these data, DT50 is between 5.17 d (model according to Atkinson) and 10.6 d (model according to Klamt).
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