Registration Dossier
Registration Dossier
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EC number: 202-086-7 | CAS number: 91-64-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Coumarin pure crystal undergoes 90% biodegradation after 28 days in the test conditions. Biodegradation starts on day 2 and reaches 85% at the end of the 10-day window (days 2 to 12).
Thus coumarin pure crystal should be regarded as readily biodegradation according to this test.
The curves obtained with the reference substance alone and with coumarin pure crystals + reference substance show no toxic effect of coumarin pure crystal to the micro-organisms at the test concentration.
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