Registration Dossier

Environmental fate & pathways

Phototransformation in air

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Phototransformation in air is not relevant due to low vapour pressure (< 0.0001 Pa).

Key value for chemical safety assessment

Additional information

Based on an estimation using AOPWIN v1.92 for the main components, tetraesters from esterification of pentaerythritol with pentanoic, heptanoic and isononanoic acids (former CAS 68424-30-6) is susceptible to indirect photodegradation in air. The estimated half time for the reaction with OH-radicals is 0.379 – 0.815 days (24 hr day; OH-concentration 0.5E+06 OH/cm³). However, indirect photodegradation in air is not a relevant rout since the substance is not likely to be present in the atmosphere due to the low vapor pressure (<0.0001 Pa). 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.