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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

BCF has been calculated using the computer program BCFBAF (v3.01). It is predicted that the substance has BCF of 777 L/kg wet weight.It is therefore concluded that the potential for bioaccumulation of 1,2-Benzenedicarboxylic acid, di-C9-11-branched and linear alkyl esters (DIPLAST L 9 -11) is low.


A phthalate ester with branched (as opposed to linear alcohol chains) has undergone risk assessment (European Union Risk Assessment Report on 1,2-benzenedicarboxylic acid, di-C9-11-branched alkyl esters, C10-rich and di-“isodecyl” phthalate,Final Report, 2003).The report considers bioaccumulation in aquatic organisms and cites a single test where a BCF of < 14.4 was determined for fish (Cyprinus carpio) according to OECD test guideline No. 305C. In the same test system, a BCF of 1.3-29.7 was determined for DEHP. The authors comments that higher BCFs have been determined with DEHP in fish in other assays and that the only BCF result available for the substance with fish is very low compared with the results available for DEHP. As a result the BCF for fish of 840 retained for the risk assessment of DEHP was used for the assessment of the exposure of humans via the environment of the substance. This value is similar to that calculated for1,2-Benzenedicarboxylic acid, di-C9-11-branched and linear alkyl esters and the calculated value may therefore be regarded as reasonable.