Registration Dossier
Registration Dossier
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EC number: - | CAS number: 1374859-51-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Read-across was used. Hypothesis for the analogue approach: see files attached under section 13 assessment reports Read Across Justification. Test for source substance to biodegradation in water was performed according to OECD 301B and compliant with GLP.
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
- Year:
- 1 996
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes
Test material
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Constituent 1
Study design
- Duration of test (contact time):
- 28 d
Reference substance
- Reference substance:
- other: sodium acetate
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 0.4
- Sampling time:
- 28 d
- Details on results:
- Points of degradation plot (test substance):
0% degradation after 7 d
0.2% degradation after 9 d
0.4% degradation after 14 d
0.4% degradation after 29 d
BOD5 / COD results
- Results with reference substance:
- Points of degradation plot (reference substance):
46.4% degradation after 7 d
57% degradation after 9 d
65% degradation after 14 d
76.6% degradation after 29 d
Applicant's summary and conclusion
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The test substance is not readily biodegradable. The test substance (source substance) bis(hydrogenated tallow C16-C18-alkyl)hydroxylamine is a structurally very similar substance to target substance hydroxylamines, di-C16-18 (even numbered) alkyl. It can be reasonably assumed that target substance is also not readily biodegradable.
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