Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

No biodegradation observed.

Additional information

Two tests on the biodegradability of 4,4´-(9H-fluoren-9-ylidene)bis(2-chloroaniline) (CAS No. 107934-68-9) are available.

The first study was conducted according to OECD 301D using filter paper as carrier (Douglas, 1991). There was no biodegradation (0%) observed within 28 days.

The second test was conducted according to OECD 301F (2017). There was barely any biodegradation (2%) observed within 28 days.

Finally, A QSAR screening using BIOWIN v4.10 on 4,4´-(9H-fluoren-9-ylidene)bis(2-chloroaniline) indicated the substance even to be recalcitrant to ultimate biodegradation. Level III Fugacity modeling (not explicitely presented in this dossier) indicated soil and sediment as target compartments for environmental distribution (soil 53%, sediment 47%) for this substance with half-lives of 360 days for soil and 1620 days for sediment. Therefore, with regard to the PBT and vPvB criteria as presented in the Guidance on Information Requirements and Chemical Safety Assessment R.11 PBT-assessment (ECHA 2014), 4,4´-(9H-fluoren-9-ylidene)bis(2-chloroaniline) (CAS No. 107934-68-9) is regarded as very persistent (vP).