Registration Dossier
Registration Dossier
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EC number: 246-805-2 | CAS number: 25306-75-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Justification for type of information:
- Guideline study shortened in view of rapid biodegradation
Considered likely degradation to be a result of abiotic and biotic mechanisms.
Primary data source not found - Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial, non-adapted
- Parameter:
- % degradation (DOC removal)
- Value:
- 98
- Sampling time:
- 12 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 75
- Sampling time:
- 5 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 30
- Sampling time:
- 3 h
- Interpretation of results:
- readily biodegradable
Reference
Description of key information
A number of studies have been performed on xanthates and the key degradation product carbon disulphide. Care is needed in the interpretation of the data as there will be a combination of biotic and abiotic processes.
Either way, there is clear evidence that the substance will not persist in the environment and will form metabolites that are themselves biodegradable or hydrolytically/photolytically unstable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Additional information
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