Registration Dossier
Registration Dossier
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EC number: 406-040-9 | CAS number: 125643-61-0
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Not specified
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP (taken from SNIF file). Registrant referring to studies >12 years old at the permission of ECHA.
Data source
Reference
- Reference Type:
- other: body responsible for the test.
- Title:
- Unnamed
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 406-040-9
- EC Name:
- -
- Cas Number:
- 125643-61-0
- Molecular formula:
- C17 H25 O3 R, Where R = (C7 H15) or (C8 H17) or (C9 H19)
- IUPAC Name:
- Reaction mass of C7-9-alkyl 3-(3,5-di-trans-butyl-4-hydroxyphenyl)propionate
Constituent 1
Study design
Initial test substance concentration
- Initial conc.:
- 21.3 mg/L
- Based on:
- not specified
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
Reference substance
- Reference substance:
- aniline
- Remarks:
- Merck No. 1261
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 2
- Sampling time:
- 28 d
- Details on results:
- Points of degradation plot (test substance):
0 % degradation after 6 d
0 % degradation after 10 d
1 % degradation after 13 d
1 % degradation after 17 d
1 % degradation after 20 d
2 % degradation after 24 d
2 % degradation after 27 d
2 % degradation after 28 d
BOD5 / COD results
- Results with reference substance:
- Points of degradation plot (reference substance):
15% degradation after 6 d
53 % degradation after 10 d
60 % degradation after 13 d
66 % degradation after 17 d
69 % degradation after 20 d
75 % degradation after 24 d
79 % degradation after 27 d
80 % degradation after 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The substance is not considered to be biodegradable.
- Executive summary:
The substance is not considered to be biodegradable. An assessment of persistency is required.
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