Registration Dossier
Registration Dossier
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EC number: 204-812-8 | CAS number: 126-92-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
72h EC50 (Desmodesmus subspicatus, growth rate) > 511 mg/L (measured concentration, EU Method C.3)
72h EC10 (Desmodesmus subspicatus, growth rate) = 199 mg/L (measured concentration, EU Method C.3)
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 199 mg/L
Additional information
One study investigating toxic effects of C8-isoAS Na (CAS 126-92-1) to freshwater algae Desmodesmus subspicatus is available (Scholz 1995). The test was performed according to EU Method C.3 and is GLP compliant. Growth inhibition caused by the test substance was determined after 24, 48 and 72 h of exposure to five test concentrations up to 511 mg a.i./L (measured concentration equal to 900 mg a.i./L of nominal concentration). The results show that the 72-hour EC50 value for growth rate was above the highest test concentration of 511 mg a.i./L (measured concentration). The 72-hour EC10 value for growth rate was determined to be 199 mg a.i./L (measured concentration).
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