Registration Dossier
Registration Dossier
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EC number: 939-265-0 | CAS number: 90583-18-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
72h EC50 (Desmodesmus subspicatus; growth rate) = 11 mg/L (nominal concentration, EU Method C.3)
72h NOEC (Desmodesmus subspicatus; growth rate) = 3 mg/L (nominal concentration, EU Method C.3)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 11 mg/L
- EC10 or NOEC for freshwater algae:
- 3 mg/L
Additional information
One GLP study investigating toxic effects of C12-14AS TEA (CAS 90583-18-9) to the freshwater algae Desmodesmus subspicatus performed according to EU Method C.3 is available (Scholz 1996). Growth inhibition caused by the test substance was determined after 24, 48 and 72 h of exposure under static conditions to seven test concentrations up to 300 mg/L as anionic active substance (nominal values in agreement with the measured values). The results show that the 72-hour EC50 value for growth rate was 11 mg a.i./L for growth rate and 9.3 mg a.i./L for biomass (nominal concentrations). The NOEC value for growth rate was determined to be 3 mg a.i./L (nominal concentration).
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