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Environmental fate & pathways

Phototransformation in air

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Description of key information

Phototransformation in air is not relevant.

Key value for chemical safety assessment

Additional information

Based on a QSAR calculation using AOPWIN v1.92, Diisodecyl azelate (CAS 28472-97-1) is susceptible to indirect photodegradation in air. The estimated half time for the reaction with OH-radicals is 11.4 hours (24 h day; OH-concentration: 0.5E+06 OH/cm3) (AOPWIN, 2013). However, photodegradation is not an important environmental fate process since the substance is not expected to evaporate into the atmosphere due to its very low vapor pressure of < 0.001 Pa at 20 °C. As this study is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance, no further testing is considered necessary.