Registration Dossier
Registration Dossier
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EC number: 939-249-3 | CAS number: 97926-05-1
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 997
- Report date:
- 1997
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: BOD-Test for Insoluble Substances (BODIS)
- GLP compliance:
- yes
Test material
- Reference substance name:
- 146340-15-0
- EC Number:
- 604-520-4
- Cas Number:
- 146340-15-0
- IUPAC Name:
- 146340-15-0
- Details on test material:
- - Batch no.: 00026032
- Water solubility: unlimited
- Colour: yellowish
- Physical state: liquid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic (adaptation not specified)
- Details on inoculum:
- - Source of inoculum: inoculum from domestic waste water sewage plant Hochdahl
- Concentration of inoculum: 50 mg/L - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- COD
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST SYSTEM
- Test vessel: flasks with nominal volume of 300 ml
- Fill volume: 200 ml nominal
Reference substance
- Reference substance:
- other: Sodium acetate trihydrate
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 67
- Sampling time:
- 28 d
- Details on results:
- - Degradation kinetic:
Time [d] Degradation [%]
3 7
7 34
14 53
21 63
28 67
BOD5 / COD results
- Results with reference substance:
- - Degradation [%] after 14 d: 81
- Degradation [%] after 28 d: 81
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable, but failing 10-day window
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