Registration Dossier
Registration Dossier
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EC number: 406-040-9 | CAS number: 125643-61-0
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Not specified
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP (taken from SNIF file). Registrant referring to studies >12 years old at the permission of ECHA.
Data source
Reference
- Reference Type:
- other: body responsible for the test.
- Title:
- Unnamed
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: 92/69/EWG, C.3; OECD 201 (1984)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 406-040-9
- EC Name:
- -
- Cas Number:
- 125643-61-0
- Molecular formula:
- C17 H25 O3 R, Where R = (C7 H15) or (C8 H17) or (C9 H19)
- IUPAC Name:
- C7-9-(branched)-alkyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Vehicle:
- yes
- Details on test solutions:
- Identity and concentration of auxiliary solvent for dispersal: 5 % v/v Tween 80 in acetone.
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 72 h
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 3 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- dissolved
- Basis for effect:
- growth rate
- Remarks on result:
- other: A concentration of 3 mg/l was the maximum that could be reached using auxiliary solvent, as the water solubility of the substance is considered to be < 0.003 mg/l.
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- > 3 mg/L
- Nominal / measured:
- not specified
- Conc. based on:
- dissolved
- Basis for effect:
- growth rate
- Remarks on result:
- other: A concentration of 3 mg/l was the maximum that could be reached using auxiliary solvent, as the water solubility of the substance is considered to be < 0.003 mg/l.
- Details on results:
- A concentration of 3 mg/l was the maximum that could be reached using auxiliary solvent, as the water solubility of the substance is considered to be < 0.003 mg/l.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- No effects at the limit of solubility in auxiliary solvent where noted in the study.
- Executive summary:
No effects at the limit of solubility in auxiliary solvent where noted in the study.
No classification is applicable.
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