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EC number: 217-589-7 | CAS number: 1897-52-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
not readily biodegradable; OECD 301 D, EU Method C.6; Thus JLG, van der Laan-Straathof JMTh, Jansen WAJ, 1992
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The ready biodegradability of the test material was determined in accordance with standard guidelines. During the test, the test material provided the sole source of carbon and energy and was added to an aqueous mineral salt solution and exposed to relatively low numbers of unadapted micro-organisms for a period of 28 days. During the study, the oxygen consumption of the micro-organisms was recorded to follow the biodegradation of both the test material and a reference substance. Under the conditions of the test the test material did not degrade and is therefore not considered to be readily biodegradable.
The study was performed in line with GLP and accepted standardised guidelines with a high standard of reporting. The study was assigned a reliability score of 1 and was considered suitable for assessment as an accurate reflection of the test material.
Supporting data was available in the form of a model prediction from BIOWIN, the output of which predicted that the test material would not be biodegradable. This prediction is in good agreement with the experimental result and, as such, the available data was considered complete and the conclusion, not readily biodegradable, was taken forward for risk assessment.
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