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EC number: 407-560-9
CAS number: 107934-68-9
No biodegradation observed.
Two tests on the biodegradability of
4,4´-(9H-fluoren-9-ylidene)bis(2-chloroaniline) (CAS No. 107934-68-9)
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).
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