Registration Dossier
Registration Dossier
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EC number: 428-410-9 | CAS number: 67014-36-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
There is a high probability thate the product is not acutely harmful to aquatic algae.
Key value for chemical safety assessment
Additional information
The present study examined the influence of the test item on the growth of an unicellular green algae Selenastrum capricornutum according to OECD guideline 201 and EU method C.3. After a range-finding test, a final test was performed exposing exponentially growing algal cultures to concentrations ranging from 4.6 to 220 mg/L, increasing with a factor of 2.2. The initial cell density was 10^4 cells/mL. The total test period was 72 hours. The measured concentrations were comparable to the nominal concentrations and did not decrease during the 72 hours test period. Recoveries ranged from 101 to 116 % of nominal. The test substance inhibited cell growth and reduced growth rate of Selenastrum capricornutum significantly at 100 mg/L and higher. The EC50 for cell growth inhibition (EbC50:0-72 h) as well as the EC50 for growth rate reduction (ErC50:0-72 h) were > 100 mg/L. (NOTOX B.V., 1998)
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