Registration Dossier
Registration Dossier
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EC number: 205-117-2 | CAS number: 133-66-4
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Read-across proposed with CAS 16090-02-1
No biodegradation observed
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
A study on the biodegradability in water of a close structural analogue (CAS 16470-24-9) is available.
In the ready biodegradability test according to OECD guideline 301A a DOC removal of 1.2 % was observed (CIBA - GEIGY 1992). Hence, the substance was not readily biodegradable.
Moreover, the biodegradation has been calculated using BioWin v.4.10 and no ready biodegradabilty was predicted.
Therefore, the stilbene fluorescent whitening agent with CAS 133-66-4 is considered to be not readily biodegradable.
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