Registration Dossier
Registration Dossier
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EC number: 240-185-7 | CAS number: 16044-24-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 1 998
- Report date:
- 1998
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, ethanedioate
- EC Number:
- 241-922-5
- EC Name:
- Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, ethanedioate
- Cas Number:
- 18015-76-4
- Molecular formula:
- C25H26N2O4
- IUPAC Name:
- Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, ethanedioate
- Test material form:
- solid
- Details on test material:
- Basic Green 4 oxalate
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Vehicle:
- no
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Study design
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 72 h
Test conditions
- Reference substance (positive control):
- not specified
Results and discussion
Effect concentrations
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 3.6 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The 72-h EC50 to the freshwater algae Desmodesmus subspicatus was determined at 3.6 mg/L for Basic Red 4 oxalate/dioxalate.
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.
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