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Environmental fate & pathways

Phototransformation in air

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Description of key information

Not relevant due to low vapour pressure

Key value for chemical safety assessment

Additional information

No experimental data evaluating the potential for photodegradation of 2,3-dihydroxypropyl laurate (CAS No. 142-18-7) in air are available. Therefore, a QSAR calculation using the AOPWIN v1.92 program has been performed instead, resulting in an estimated half-life of 13.1 hours (reaction with OH-radicals, 24h-day)(López Parrón, 2011).This value indicates that the substance is susceptible to undergo rapid indirect photodegradation in air. Nevertheless, this is not expected to be a relevant environmental fate process, since the substance is not likely to be present in the atmosphere in relevant amounts based on its estimated vapour pressure (5.45 x 10E-07 Pa at 20 °C).