Registration Dossier
Registration Dossier
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EC number: 807-059-9 | CAS number: 945558-97-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Report date:
- 2014
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 3-[(3,4,5-trimethoxyphenyl)methylidene]pentane-2,4-dione
- EC Number:
- 807-059-9
- Cas Number:
- 945558-97-4
- Molecular formula:
- C15H18O5
- IUPAC Name:
- 3-[(3,4,5-trimethoxyphenyl)methylidene]pentane-2,4-dione
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: Secondary effluent of a treatment plant
- Details on inoculum:
- The Secondary effluent of a treatment plant was collected from Sewage Treatment Plan, JRF. then filtered through Whatman No 1 filter paper and incubated at test temperature 20±1℃ in incubator for 6 days in dark.
- Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 2 mg/L
- Based on:
- formulation
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- other: potassium hydrogen phthalate
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. -2.04
- Sampling time:
- 7 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 2.3
- Sampling time:
- 14 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 8.18
- Sampling time:
- 21 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 30.91
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- the degradation for reference substance (potassium hydrogen phthalate) on day 7, 14, 21 and 28 were 61.70, 79.15, 90.64 and 82.55%, respectively.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The Synoxyl HSS did not inhibit degradation of reference substance by more than 25% after 14 days, means no adverse effects of Synoxyl HSS on the inoculum. Therefore, Synoxyl HSS is not readily biodegradable.
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