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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 QSAR calculations for its main components using AOPWIN v1.92, DiPE triisononanoate triethylhexanoate (CAS No. 68443-84-5) is susceptible to indirect photodegradation in air. The estimated half time for the reaction with OH-radicals is in the range of 6.39 to 6.61 hours (24 h day; OH-concentration: 0.5E+06 OH/cm3). However, photodegradation is not expected to be an important environmental fate process since the main components of the substance are not expected to evaporate into the atmosphere due to their low vapor pressures 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.