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Environmental fate & pathways

Phototransformation in air

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Description of key information

Phototransformation in air is not relevant due to the low vapour pressure.

Key value for chemical safety assessment

Additional information

Based on QSAR calculations for the main components of 2-Butenedioic acid (E)-, di-C12-14-alkyl esters (List No. 938-575-3) using AOPWIN v1.92, the substance is susceptible to indirect photodegradation in air. The estimated half time for the reaction with OH-radicals is in the range of 8.51 to 9.96 hours (24 h day; OH-concentration: 0.5E+06 OH/cm3). However, photodegradation is not an important environmental fate process since the substance is not expected to evaporate into the atmosphere due to its low vapour pressure of < 0.001 Pa at 20 °C.