Registration Dossier

Environmental fate & pathways

Phototransformation in air

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

DT50 (24h-day) = 81.6 hours (AOPWIN v1.92)

Key value for chemical safety assessment

Additional information

No experimental data evaluating the potential for photodegradation of methyl hexanoate (CAS No. 106-70-7) in air are available. Therefore, a QSAR estimation has been performed, leading to an estimated half-life of 81.6 hours (QSAR calculation, AOPWIN v1.92, reaction with OH-radicals, 24h-day)(López Parrón, 2011). Based on its vapour pressure value of 496 Pa at 25ºC, this substance can be expected to show a relevant degree of volatilization into the air. Therefore, photodegradation in air could be a relevant environmental fate process for methyl hexanoate. 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.