Registration Dossier
Registration Dossier
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EC number: 614-925-8 | CAS number: 69098-08-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study conducted in accordance with GLP, however the test substance had a low level of purity (e.g. < 90 %).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 993
- Report date:
- 1993
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- methyl 3-methoxy-3-(4-methoxyphenyl)propanoate
- EC Number:
- 614-925-8
- Cas Number:
- 69098-08-4
- Molecular formula:
- C12 H16 O4
- IUPAC Name:
- methyl 3-methoxy-3-(4-methoxyphenyl)propanoate
- Details on test material:
- - Name of test material (as cited in study report): Benzenepropanoic aid. -beta-, 4-dimethoxy-, methyl ester, technical grade
- Analytical purity: 80.7 %
- Lot/batch No.: 165 (Manufactured on the 22 Apr 1993)
Water solubility: 1 mg/l
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activated sludge from a laboratory waste water treatment plant using municipal sewage
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 1 885 mg/L
- Based on:
- COD
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- aniline
Results and discussion
- Test performance:
- pH values in the assays at the end of the test:
pH 8.1 (test substance), pH 7.3 (control substance), pH 7.7 (blank control)
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0 - 10
- Sampling time:
- 28 d
- Details on results:
- The test substance is not readily biodegradable according to OCED guidelines.
BOD5 / COD results
- Results with reference substance:
- Kinetic of control substance (in %):
= 74 after 5 day(s)
= 100 after 28 day(s)
Any other information on results incl. tables
The estimation of the biodegradation was based on the BOD from the ThOD or from the COD.
Applicant's summary and conclusion
- Interpretation of results:
- other: poorly biodegradable
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