Registration Dossier
Registration Dossier
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EC number: 203-966-3 | CAS number: 112-39-0
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Not relevant due to low vapour pressure
Key value for chemical safety assessment
Additional information
No experimental data evaluating the potential for photodegradation of methyl palmitate (CAS No. 112-39-0) in air are available. Therefore, a QSAR calculation using the AOPWIN v1.92 program has been performed, resulting in an estimated half-life of 20.4 hours (reaction with OH-radicals, 24h-day)(López Parrón, 2011). This value indicates methyl palmitate is susceptible to undergo rapid indirect phototransformation if released into the air. Nevertheless, this is not expected to be a relevant environmental fate process, since methyl palmitate is not expected to be present in the atmosphere in significant amounts based on its vapour pressure value (0.008 Pa at 25 °C). As this study is not a standard information requirement according to Regulation (EC) No. 1907/2006 and there is no indication from the CSA according to Annex I on the need to investigate further the fate and behavior of the substance (Annex X requirement), no testing is considered necessary.
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