Registration Dossier
Registration Dossier
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EC number: 204-516-9 | CAS number: 122-03-2
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening tests
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: No GLP and guideline mentioned. Study summary only.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
- Principles of method if other than guideline:
- No data about the method available
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 4-isopropylbenzaldehyde
- EC Number:
- 204-516-9
- EC Name:
- 4-isopropylbenzaldehyde
- Cas Number:
- 122-03-2
- Molecular formula:
- C10H12O
- IUPAC Name:
- 4-(propan-2-yl)benzaldehyde
- Test material form:
- not specified
Constituent 1
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
No data
Study design
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- - Concentration of sludge: 30 mg/L (as concentration of suspended matter)
- Details on study design:
- TEST CONDITIONS
- Tested liquid volume: 300 mL
- Test temperature: 25± 1°C
- Tested liquid incubation time: 28 days
- Measuring equipment:
(1) Biochemical oxygen demand (BOD) by closed oxygen consumption measuring equipment
(2) Dissolved organic carbon by total organic carbon (TOC) analysis method
(3) Analysis of test article by high-performance liquid chromatography (HPLC)
Results and discussion
% Degradationopen allclose all
- Parameter:
- other: BOD
- Value:
- 81
- Remarks on result:
- other: average of three measurements
- Parameter:
- % degradation (TOC removal)
- Value:
- 92
- Remarks on result:
- other: average of three measurements
- Parameter:
- other: degradation
- Value:
- 100
- Remarks on result:
- other: measured by HPLC (average of three measurements)
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The test substance showed a biodegradation rate of 81% (via BOD) and 92% (via TOC), respectively. Therefore the test substance is considered to be readily biodegradable.
- Executive summary:
The test substance showed a biodegradation rate of 81% (via BOD) and 92% (via TOC), respectively. Therefore the test substance is considered to be readily biodegradable.
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