Registration Dossier
Registration Dossier
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EC number: 908-381-3 | 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:
- weight of evidence
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study performed to GLP and guideline
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- 10101-41-4
- EC Number:
- 600-148-1
- Cas Number:
- 10101-41-4
- IUPAC Name:
- 10101-41-4
- Reference substance name:
- calcium sulfate dihydrate
- IUPAC Name:
- calcium sulfate dihydrate
- Details on test material:
- - Name of test material (as cited in study report): Calcium sulfate dihydrate
- Analytical purity: 99.9%
- Lot/batch No.: Sigma Aldrich Corporation -Lot No. 109H0166
Constituent 1
Constituent 2
Test organisms
- Test organisms (species):
- Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Study design
- Limit test:
- yes
Test conditions
- Test temperature:
- 22 - 23 °C
- pH:
- 7.97 - 8.03 at start and 8.03 - 8.20 at finish
- Nominal and measured concentrations:
- Limit test performed at a nominal concentration of 100 mg/L
Results and discussion
Effect concentrations
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 79 mg/L
- Remarks on result:
- other: The EC50 of calcium sulfate dihydrate was > 100 mg/L. The result has been corrected for calcium sulfate anhydrous
- Details on results:
- There was no significant difference in the growth curves between the test group and the control group.
Applicant's summary and conclusion
- Conclusions:
- The 72 h EC50 of calcium sulfate anhydrous to algae is >79 mg/L.
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