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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 (< 0.0001 Pa at 20 °C).

Key value for chemical safety assessment

Additional information

No experimental studies investigating the phototransformation of Fatty acids, rape-oil, mixed esters with 1,4:3,6-dianhydro-d-glucitol, sorbitan and sorbitol (CAS 93334-10-2) in air are available. Results from AOPWIN v1.92 indicate that the substance is susceptible to indirect photodegradation in air (Müller, 2014). The estimated half-life for the reaction with OH-radicals is 1.058 - 3.57 h (cis-isomer, 24 h day; OH-concentration: 0.5E+06 OH/cm³) and 0.668 - 3.335 h (trans-isomer, 24 h day; OH-concentration: 0.5E+06 OH/cm³). However, this is not expected to be a relevant environmental fate process, since Fatty acids, rape-oil, mixed esters with 1,4:3,6-dianhydro-d-glucitol, sorbitan and sorbitol is not expected to enter the atmospheric compartment based on the low estimated vapour pressure under ambient conditions (< 0.0001 Pa at 20 °C). 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 behaviour of the substance (Annex X requirement), no further testing is considered necessary for Fatty acids, rape-oil, mixed esters with 1,4:3,6-dianhydro-d-glucitol, sorbitan and sorbitol.