Registration Dossier
Registration Dossier
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EC number: 221-259-8 | CAS number: 3048-64-4
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Available data indicates VNB is not readily biodegradable by mixed microbial populations in aqueous media. Slow degradation in the environment may well occur.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
In a reliable study, 5 -ethylidene-2 -trinorbornene (ENB), a structural isomer of 2 -vinylnorborn-2 -ene (VNB) with the same number of olefinic groups, was not biodegradable when tested according to the OECD 301C guideline. Exactly the same results are obtained using the BIOWIN QSAR with ENB and VNB, strongly suggesting that experimental results for ENB can be read across to VNB with a high degree of confidence.
The BIOWIN QSAR predicts that ultimate degradation will however take place within a timeframe of weeks. Whilst there is no formal study available to verify this, the model would suggest potential for inherent biodegradability. However, based on available experimental data, it must be assumed that the substance is not biodegradable.
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