Registration Dossier
Registration Dossier
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EC number: 208-523-8 | CAS number: 532-02-5
Long-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- long-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- publication
- Title:
- Toxicity thresholds of certain sodium sulfonate for Daphnia magna Straus
- Author:
- Louis Freeman
- Year:
- 1 953
- Bibliographic source:
- Sewage Ind. Wastes 25(11): 1331-1335, 1953
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: as below
- Principles of method if other than guideline:
- To evaluate the toxicity of Sodium naphthalene-beta-sulfonate in Daphnia magna for 100 hour
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Sodium naphthalene-2-sulphonate
- EC Number:
- 208-523-8
- EC Name:
- Sodium naphthalene-2-sulphonate
- Cas Number:
- 532-02-5
- Molecular formula:
- C10H8O3S.Na
- IUPAC Name:
- sodium naphthalene-2-sulphonate
- Reference substance name:
- Sodium naphthalene-beta-sulfonate
- IUPAC Name:
- Sodium naphthalene-beta-sulfonate
- Details on test material:
- - Name of test material (as cited in study report): Sodium naphthalene-beta-sulfonate
- Molecular formula (if other than submission substance): C10H8O3S.Na
- Molecular weight (if other than submission substance):230.23 g/mol
- Smiles notation (if other than submission substance): c1ccc2cc(ccc2c1)S(=O)(=O)[O-].[Na+]
- InChl (if other than submission substance): 1S/C10H8O3S.Na/c11-14(12,13)10-6-5-8-3-1-2-4-9(8)7-10;/h1-7H,(H,11,12,13);/q;+1/p-1
- Substance type: Organic
- Physical state: Solid
- Analytical purity: >95%
Constituent 1
Constituent 2
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- not specified
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Water flea
- Strain: magna
- Source: No data available.
- Age at study initiation (mean and range, SD): young
Study design
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 100 h
Test conditions
- Test temperature:
- 23 deg C
- pH:
- 7.34
- Nominal and measured concentrations:
- 135 mg/L
Results and discussion
Effect concentrations
- Duration:
- 100 h
- Dose descriptor:
- LC50
- Effect conc.:
- 135 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
Applicant's summary and conclusion
- Conclusions:
- LC50 was found to be 135 mg/l for Sodium naphthalene-beta-sulfonate in Daphnia magna for 100 hour
- Executive summary:
In a long-term toxicity study conducted for Sodium naphthalene-beta-sulfonate in Daphnia magna, mortality effects were observed over a 100 hour duration. When Daphnia magna were exposed at a concentration of 135 mg/l, 50% mortality was observed. Therefore LC50 was found to be 135 mg/l for Sodium naphthalene-beta-sulfonate.
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