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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 low vapour pressure (< 0.001 Pa).

Key value for chemical safety assessment

Half-life in air:
19.55 h

Additional information

Based on an estimation using AOPWIN v1.92, 2,2-bis[[(1-oxopentyl)oxy]methyl]propane-1,3-diyl divalerate (CAS-No. 15834-04-5) is susceptible to indirect photodegradation in air. The estimated half time for the reaction with OH-radicals is 19.55 h (24 h day; OH-concentration 0.5E+06 OH/cm³; Müller, 2013). However, indirect photodegradation in air is not a relevant route since the substance is not likely to be present in the atmosphere due to the low vapor pressure. As this study is not a standard information requirement in REACh and there is no indication from the Chemical Safety Assessment (CSA) on the need to investigate further the fate and behavior of the substance, no further testing is considered necessary for the substance.