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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

No experimental studies investigating the phototransformation in air of any member of the PFAE linear is available. Based on QSAR calculations using AOPWIN v1.92, all substances are susceptile to indirect photodegradation in air. The estimated half times for the reaction with OH-radicals are in the range of 6 - 37 hours (24h day; OH-concentration: 0.5E+06 OH/cm3). However, photodegradation is not an important environmental fate process since all substances are not expected to evaporate into the atmosphere due to the low vapor pressure of < 1 Pa at 20 °C.

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