Registration Dossier
Registration Dossier
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EC number: 203-778-1 | CAS number: 110-56-5
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening test, other
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Remarks:
- Result table with limited additional information
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 987
- Report date:
- 1987
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Modified screening degradation test with DOC-analytic
- Deviations:
- not specified
- GLP compliance:
- no
Test material
- Reference substance name:
- 1,4-dichlorobutane
- EC Number:
- 203-778-1
- EC Name:
- 1,4-dichlorobutane
- Cas Number:
- 110-56-5
- Molecular formula:
- C4H8Cl2
- IUPAC Name:
- 1,4-dichlorobutane
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, predominantly domestic (adaptation not specified)
- Duration of test (contact time):
- 19 d
Initial test substance concentration
- Initial conc.:
- 20 mg/L
- Based on:
- TOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Results and discussion
% Degradation
- Key result
- Value:
- 95
- Sampling time:
- 19 d
- Details on results:
- Kinetic of test substance (in %):
after 0 day(s)
= 91 after 5 day(s)
= 91 after 14 day(s)
= 95 after 19 day(s)
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- other: DOC quickly disappears
- Conclusions:
- The DOC disappears quickly (91 % DOC removal after 5 days of incubation). The study does not allow differentiation between volatilization and mineralisation. Therefore, a conclusion regarding ready biodegradability is not possible.
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