Registration Dossier
Registration Dossier
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EC number: 241-240-8 | CAS number: 17199-29-0
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 06/05/2002-21/05/2002
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 002
- Report date:
- 2002
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-A (Determination of the "Ready" Biodegradability - Dissolved Organic Carbon (DOC) Die-Away Test)
- Qualifier:
- according to guideline
- Guideline:
- other: International Standard 150 7827:1994 Water quality - Evaluation in an aqueous medium of the ‹ultimate" aerobic biodegradability of organic compounds - Method by analysis of dissolved organic carbon (DOC)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- L-2-hydroxy-2-phenylacetic acid
- EC Number:
- 210-276-6
- EC Name:
- L-2-hydroxy-2-phenylacetic acid
- Cas Number:
- 611-71-2
- Molecular formula:
- C8H8O3
- IUPAC Name:
- hydroxy(phenyl)acetic acid
- Test material form:
- solid: particulate/powder
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and batch No.of test material: BASF, 29393/189
- Purity test date: 100%
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: at room temperature
- Stability under test conditions: The stability of the test substance under storage conditions over the test period was guaranteed by the sponsor. The data are in the responsibility of the sponsor.
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- water (not specified)
- Duration of test (contact time):
- 14 d
Initial test substance concentration
- Initial conc.:
- ca. 32 mg/L
- Based on:
- DOC
- Remarks:
- equivalent to 20 mg/l
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Results and discussion
- Test performance:
- about 32 mg/I equivalent to 20 mg/l DOC
Activated sludge from laboratory wastewater plants treating municipal sewage. Concentration of dry substance 30 mg/I.
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- > 90 - < 100
- Remarks on result:
- other: The test substance is readily biodegradable (according to OECD criteria)
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
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