Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: screening test, other
- Remarks:
- DOC removal
- Type of information:
- other: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Remarks:
- Source study has reliability 2. Details on the read across are attached in section 13.
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 18749
- Principles of method if other than guideline:
- Internal method (1.4.1992).
The DOC determination was conducted according to DIN 38409 part 3 (1983) using a Shimadzu TOC 500 or TOC 5000. - GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of activated sludge: activated sludge of a municipal WWTP.
- Concentration of sludge: 1 g/L. - Duration of test (contact time):
- 24 h
- Initial conc.:
- 42 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- DOC removal
- Remarks:
- by adsorption
- Parameter:
- other: DOC removal by adsorption
- Value:
- > 90 - < 100
- Sampling time:
- 1 d
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- Not readily bioderadable
- Executive summary:
Method:
The substance was tested following an internal method.
Results:
Test sample under the experimental conditions did not show biodegradation properties.
Reference
Description of key information
Read-Across - Not readily biodegradable
Key value for chemical safety assessment
- Biodegradation in water:
- not biodegradable
Additional information
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