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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Link to relevant study record(s)

Description of key information

log Koc: > 5 (KOCWIN v2.00)

Key value for chemical safety assessment

Additional information

No studies investigating the adsorption/desorption behaviour of Bis(2-octyldodecyl) azelate (CAS 897626-46-9) are available. Using KOCWIN Program (v2.00), log Koc values of 12.62 and 11.60 were calculated, based on log Kow and on the molecular conductivity index (MCI; Hopp, 2011) were calculated, respectively (Hopp, 2011). These models have no universally accepted definition of its model domain, but since the substance is outside the Kow range of the training set, the results should be taken with caution. The definite values may not be fully reliable, but indicate a high adsorption potential, which is also to be expected based on the high calculated log Kow value (21.4, KOWWIN v1.68). However, the log Koc value for one member of the PFAE linear category member (Dioctyl adipate, CAS 123 -79 -5) that is characterized by a smaller fatty acid and alcohol constituent is within the training set and the result is fully reliable indicating a high potential for adsorption (log Koc 4.63, MCI). The adsorption potential of Bis(2-octyldodecyl) azelate (CAS 897626-46-9) is expected to be higher, due to the longer hydrocarbon side chains which increase the lipophilicity of the substance. Based on this information, it can be assumed that the adsorption potential of Bis(2-octyldodecyl) azelate (CAS 897626-46-9) is high.