Registration Dossier
Registration Dossier
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3-{5-[3-(4-{1-[3-(dimethylammonio)propyl]-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridylazo}benzamido)phenylazo]-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-1-pyridyl}propyl(dimethyl)ammonium di(acetate); 3-{5-[4-(3-{1,6-dihydro-2-hydroxy-4-methyl-1-[3-(methylammonio)propyl]-6-oxo-3-pyridylazo}benzamido]phenylazo]-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-1-pyridyl}propyl(dimethyl)ammonium di(acetate); reaction mass of: 3-{5-[3-(4-{1,6-dihydro-2-hydroxy-4-methyl-1-[3-(methylammonio)propyl]-6-oxo-3-pyridylazo}benzamido)phenylazo]-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-1-pyridyl}propyl(methyl)ammonium di(acetate)
EC number: 431-440-5 | CAS number: -
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:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Version / remarks:
- Directive 92/69/EC, C.3
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 431-440-5
- EC Name:
- -
- IUPAC Name:
- (3-{5-[(E)-2-(3-{4-[(E)-2-{1-[3-(dimethylazaniumyl)propyl]-2-hydroxy-4-methyl-6-oxo-1,6-dihydropyridin-3-yl}diazen-1-yl]benzamido}phenyl)diazen-1-yl]-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridin-1-yl}propyl)dimethylazanium (3-{6-hydroxy-5-[(E)-2-(3-{4-[(E)-2-{2-hydroxy-4-methyl-1-[3-(methylazaniumyl)propyl]-6-oxo-1,6-dihydropyridin-3-yl}diazen-1-yl]benzamido}phenyl)diazen-1-yl]-4-methyl-2-oxo-1,2-dihydropyridin-1-yl}propyl)(methyl)azanium (3-{6-hydroxy-5-[(E)-2-(4-{3-[(E)-2-{2-hydroxy-4-methyl-1-[3-(methylazaniumyl)propyl]-6-oxo-1,6-dihydropyridin-3-yl}diazen-1-yl]benzamido}phenyl)diazen-1-yl]-4-methyl-2-oxo-1,2-dihydropyridin-1-yl}propyl)dimethylazanium hexaacetate
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- no
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 72 h
Test conditions
- Hardness:
- 24 mg CaCO3/L
- Test temperature:
- 22°C
- pH:
- 7.6 to 7.9
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 8.4 mg/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- biomass
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 29.7 mg/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 1.3 mg/L
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 1.3 mg/L
- Conc. based on:
- test mat.
- Basis for effect:
- biomass
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
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