Registration Dossier
Registration Dossier
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EC number: 627-063-2 | CAS number: 1134960-41-0
Toxicity to microorganisms
Administrative data
- Endpoint:
- activated sludge respiration inhibition testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP study according to EU/OECD-guidelines.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 014
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- sodium 4-(methoxycarbonyl)-5-oxo-2,5-dihydrofuran-3-olate
- EC Number:
- 627-063-2
- Cas Number:
- 1134960-41-0
- Molecular formula:
- C6H5O5Na
- IUPAC Name:
- sodium 4-(methoxycarbonyl)-5-oxo-2,5-dihydrofuran-3-olate
Constituent 1
Sampling and analysis
- Analytical monitoring:
- no
Test solutions
- Vehicle:
- yes
- Details on test solutions:
- in deionised water
Test organisms
- Test organisms (species):
- other: mixed population of aquatic microorganisms (activated sludge)
Study design
- Test type:
- not specified
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 3 h
Test conditions
- Test temperature:
- 20 ± 2°C
- pH:
- 8
- Nominal and measured concentrations:
- 1000 mg/L
- Reference substance (positive control):
- yes
- Remarks:
- 3,5-Dichlorophenol
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 3 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- inhibition of total respiration
- Remarks:
- respiration rate
- Duration:
- 3 h
- Dose descriptor:
- EC10
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- inhibition of total respiration
- Remarks:
- respiration rate
- Duration:
- 3 h
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- inhibition of total respiration
- Remarks:
- respiration rate
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The test item showed 0.00 % respiration inhibition of activated sludge at the highest test item concentration of 1000 mg/L.
The EC50 is higher than 1000 mg/L.
The NOEC is equal or higher than 1000 mg/L.
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