Registration Dossier
Registration Dossier
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EC number: 932-286-6 | CAS number: -
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Documentation is insufficient for assessment.
Data source
Reference
- Reference Type:
- other: raw data
- Title:
- Unnamed
- Year:
- 1 973
Materials and methods
- Principles of method if other than guideline:
- Closed bottle test, comparable to OECD TG 301 D
- GLP compliance:
- no
Test material
- Reference substance name:
- 2,2,4,6,6-pentamethylheptane-4-thiol
- EC Number:
- 296-714-7
- EC Name:
- 2,2,4,6,6-pentamethylheptane-4-thiol
- Cas Number:
- 93002-38-1
- Molecular formula:
- C12H26S
- IUPAC Name:
- 2,2,4,6,6-pentamethylheptane-4-thiol
- Details on test material:
- - Name of test material (as cited in raw data sheet): Dodecylmerkaptan, but the test material was material as defined in section 1 (CAS 93002-38-1). Therefore the new CAS number 93002-38 was assigned.
- Analytical purity: no data
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- not specified
- Details on inoculum:
- no data
- Duration of test (contact time):
- 20 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 0.9 mg/L
- Based on:
- test mat.
- Initial conc.:
- 2.7 mg/L
- Based on:
- test mat.
- Initial conc.:
- 9 mg/L
- Based on:
- test mat.
- Initial conc.:
- 27 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Remarks:
- (expressed as BOD)
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 20 d
- Remarks on result:
- other: 0.9 mg/L
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 20 d
- Remarks on result:
- other: 2.7 mg/L
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 20 d
- Remarks on result:
- other: 9.0 mg/L
- Parameter:
- % degradation (O2 consumption)
- Value:
- < 10
- Sampling time:
- 20 d
- Remarks on result:
- other: 27 mg/L
- Details on results:
- Chloride negative
Applicant's summary and conclusion
- Interpretation of results:
- other: insufficient data - no assessment possible
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