Registration Dossier
Registration Dossier
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EC number: 232-089-9 | CAS number: 7785-87-7
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)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP and to a guideline.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Manganese sulphate monohydrate
- IUPAC Name:
- Manganese sulphate monohydrate
- Details on test material:
- - Name of test material (as cited in study report): manganese sulphate monohydrate
- Physical state: solid
- Lot/batch No.:
- Storage condition of test material: stored in the dark at room temperature
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
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
- Test temperature:
- 24+/-1°C
- Details on test conditions:
- TEST SYSTEM
- Type : open
OTHER TEST CONDITIONS
- Light intensity and quality: constant illumination
TEST CONCENTRATIONS
- Spacing factor for test concentrations: 10
- Test concentrations: 1.0, 3.2, 10, 32, 100 mg MnSO4.H2O/L
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 61 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 1 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Duration:
- 72 h
- Dose descriptor:
- LOEC
- Effect conc.:
- 3.2 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The ErC50 (growth) for MnSO4.H2O was 61 mg/L and the NOEC (growth) was 1.0 mg/L.
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