Registration Dossier
Registration Dossier
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EC number: 403-800-1 | CAS number: 103597-45-1 EVERSORB 78; LOWILITE 36; LS.BT.620; MIXXIM BB/100; TINUVIN 360
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
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Body responsible for the test
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Directive 92/CEE C3
- Deviations:
- not specified
- GLP compliance:
- yes
Test material
- Reference substance name:
- 2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)
- EC Number:
- 403-800-1
- EC Name:
- 2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)
- Cas Number:
- 103597-45-1
- Molecular formula:
- C41H50N6O2
- IUPAC Name:
- 2-(2H-1,2,3-benzotriazol-2-yl)-6-{[3-(2H-1,2,3-benzotriazol-2-yl)-2-hydroxy-5-(2,4,4-trimethylpentan-2-yl)phenyl]methyl}-4-(2,4,4-trimethylpentan-2-yl)phenol
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Vehicle:
- yes
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Study design
- Test type:
- not specified
- Water media type:
- not specified
- Limit test:
- no
- Total exposure duration:
- 72 h
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 2 mg/L
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 2 mg/L
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- > 2 mg/L
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- > 2 mg/L
- Basis for effect:
- growth rate
Any other information on results incl. tables
2mg/lL was the maximum achievable concentration, where the substance (+auxilary solvent) was soluble in the test media. Concentrations were measured at 0 and 72 h of exposure. Based on the nominal concentrations no loss was observed (%Concentration loss over test:... 0).
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Conclusions:
- EC50 >100 mg/l (72h)
NOEC >100 mg/L (72h)
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