Registration Dossier
Registration Dossier
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EC number: 228-809-6 | CAS number: 6359-83-7
Short-term toxicity to fish
Administrative data
- Endpoint:
- short-term toxicity to fish
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 20 Feb 1975
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 975
- Report date:
- 1975
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 203 (Fish, Acute Toxicity Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- Disodium 2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoate
- EC Number:
- 228-809-6
- EC Name:
- Disodium 2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoate
- Cas Number:
- 6359-83-7
- Molecular formula:
- C17H14N4O6S.2Na
- IUPAC Name:
- disodium 2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoate
- Test material form:
- solid: particulate/powder
1
Sampling and analysis
- Analytical monitoring:
- no
Test solutions
- Vehicle:
- no
- Details on test solutions:
- Directly weighed into water
Test organisms
- Test organisms (species):
- Oncorhynchus mykiss (previous name: Salmo gairdneri)
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
Test conditions
- pH:
- 7.9 - 8.0
- Nominal and measured concentrations:
- 100, 200, 1000 mg/L
- Reference substance (positive control):
- no
Results and discussion
Effect concentrations
- Duration:
- 48 h
- Dose descriptor:
- LC50
- Effect conc.:
- ca. 447 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality (fish)
- Remarks on result:
- other: calculated as geometric mean of LC0 (200 mg/L) and LC100 (1000 mg/L)
- Details on results:
- Mortality:
100 mg/L: 0%
200 mg/L: 0%
1000 mg/L: 100%
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The 48-h LC50 to rainbow trout was calculated to be ca. 447 mg/L as geometric mean of LC0 (200 mg/L) and LC100 (1000 mg/L).
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