Registration Dossier
Registration Dossier
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EC number: 413-890-4 | CAS number: 82469-79-2
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 413-890-4
- EC Name:
- -
- Cas Number:
- 82469-79-2
- Molecular formula:
- C28H50O8
- IUPAC Name:
- 1,2,3-trihexyl 2-(butanoyloxy)propane-1,2,3-tricarboxylate
Constituent 1
Study design
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
Reference substance
- Reference substance:
- other: Sodium Benzoate (10 mgC/L) & Hexadecane (10 mgC/L)
Results and discussion
% Degradation
- Parameter:
- % degradation (inorg. C analysis)
- Value:
- 4
- Sampling time:
- 28 d
- Details on results:
- Points of degradation plot (test substance):
0 % degradation after 2 d
0 % degradation after 4 d
0 % degradation after 6 d
0 % degradation after 8 d
1 % degradation after 10 d
1 % degradation after 13 d
1 % degradation after 20 d
1 % degradation after 22 d
4 % degradation after 28 d
13 % degradation after 34 d
24 % degradation after 38 d
36 % degradation after 43 d
47 % degradation after 50 d
54 % degradation after 57 d
60 % degradation after 64 d
66 % degradation after 71 d
70 % degradation after 78 d
74 % degradation after 85 d
BOD5 / COD results
- Results with reference substance:
- Points of degradation plot (reference substance):
32 % degradation after 2 d
48 % degradation after 4 d
61 % degradation after 6 d
68 % degradation after 8 d
71 % degradation after 10 d
74 % degradation after 13 d
78 % degradation after 20 d
78 % degradation after 22 d
80 % degradation after 28 d
81 % degradation after 34 d
81 % degradation after 38 d
81 % degradation after 43 d
81 % degradation after 50 d
81 % degradation after 57 d
Applicant's summary and conclusion
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- Citroflex B-6 cannot be considered readily biodegradable, but is ultimately biodegraded in the presence of a weak inoculum at concentrations above its limit of water solubility following extended incubation.
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