Registration Dossier
Registration Dossier
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EC number: 432-520-2 | CAS number: 232938-43-1
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not readily biodegradable according to OECD criteria, but can be easily eliminated from water.
Key value for chemical safety assessment
- Biodegradation in water:
- not biodegradable
- Type of water:
- freshwater
Additional information
In a GLP guideline study according to OECD 301B a biodegradation of <10 % was observed (BASF 2014). This result is supported by a GLP guideline study according to OECD 301F where a biodegradation of 1.2 % was observed (RCC 1999). Hence, the substance is poorly biodegradable. The poor biodegradability of the test substance is also confirmed by a japanese GLP guideline study in which no biodegradation was observable (Gakushuin 2000).
Additional information is given from a Zahn Wellens test (OECD 302B). After 3 hours 73 % of DOC removal was measured indicating adsorption potential of the substance. It is thus easily eliminable from water (Solvias 2000).
Based on the results of the performed simulation test, overruling the results of the performed screening tests, it is considered appropriate to conclude not biodegradable as key value, to use as input parameter for the environmental assessment (e.g. for assessing the distribution of the substance in a STP).
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