Registration Dossier
Registration Dossier
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EC number: 939-249-3 | CAS number: 97926-05-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1996
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.3 (Algal Inhibition test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Alcohols, C12-14, ethoxylated
- EC Number:
- 500-213-3
- EC Name:
- Alcohols, C12-14, ethoxylated
- Cas Number:
- 68439-50-9
- IUPAC Name:
- 68439-50-9
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- no
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
- Details on test organisms:
- - Strain: Scenedesmus subspicatus SAG 8681
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 72 h
Test conditions
- Test temperature:
- 23 °C
- pH:
- test start: 7.6 - 7.9
test end: 8.9 - 9.3 - Nominal and measured concentrations:
- - Concentrations tested (nominal): 0, 0.05, 0.1, 0.2, 0.4 and 0.8 mg/L
- Recovery: 70.9% (mean value) for the analysed test concentration 0.8 mg/L
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 0.57 mg/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- other: ErC10
- Effect conc.:
- 0.13 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- act. ingr.
- Basis for effect:
- growth rate
- Details on results:
- 72 h EC50 0.13 mg/L (meassured; biomass)
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
