Registration Dossier
Registration Dossier
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EC number: 288-492-5 | CAS number: 85736-79-4
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 7.8.1998-10.8.1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
- Qualifier:
- according to guideline
- Guideline:
- ISO 8692 (Water Quality - Fresh Water Algal Growth Inhibition Test with Scenedesmus subspicatus and Selenastrum capricornutum)
- Version / remarks:
- version 1989
- GLP compliance:
- yes
- Specific details on test material used for the study:
- Fain 3, 1998
- Analytical monitoring:
- yes
- Vehicle:
- yes
- Test organisms (species):
- Selenastrum sp.
- Details on test organisms:
- Green alga Selenestrum capricornutum
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 4 d
- Test temperature:
- 22+-1 C
- pH:
- 7,0-7,8 (start) 7,3-9,2 (end)
- Nominal and measured concentrations:
- 32-100 mg/l
- Reference substance (positive control):
- yes
- Remarks:
- Potassium chromate (0-72 h) 0,6 mg/l
- Key result
- Duration:
- 4 d
- Dose descriptor:
- EC50
- Effect conc.:
- ca. 1 g/L
- Nominal / measured:
- meas. (initial)
- Conc. based on:
- test mat. (total fraction)
- Basis for effect:
- growth rate
- Details on results:
- Same test was also made in concnetrations of 0, 1.0, 3.2, 10, 32, 100, 320 ml/ltr Temperature 22 C.
- Results with reference substance (positive control):
- Potassium chromate EC50: 0,6 mg/l
- Validity criteria fulfilled:
- yes
- Conclusions:
- E(r)C50 (0-72 h) 310 mg/l
E(r)C50 (0-96 h) 360 mg/l
NOE(r)C 100 mg/l - Executive summary:
E(r)C50 (0-72 h) 310 mg/l
E(r)C50 (0-96 h) 360 mg/l
NOE(r)C 100 mg/l
Reference
Description of key information
E(r)C50 (0-72 h) 310 mg/l
E(r)C50 (0-96 h) 360 mg/l
NOE(r)C 100 mg/l
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 310 mg/L
- EC50 for marine water algae:
- 310 mg/L
- EC10 or NOEC for freshwater algae:
- 100 mg/L
- EC10 or NOEC for marine water algae:
- 100 mg/L
Additional information
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
