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Toxicity to aquatic algae and cyanobacteria

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Description of key information

Acutely harmful for aquatic algae and cyanobacteria.

Key value for chemical safety assessment

Additional information

The toxicity to aquatic algae and cyanobacteria was assessed in a study according to OECD guideline 201 under consideration of GLP. The test substance is a sparingly soluble UVCB. Therefore the test substance concentrations were prepared under general guidance of OECD 23. The algae (Pseudokirchneriella subcapitata) were exposed to 0 (control), 4.6, 10, 22, and 100 mg/L test substance as nominal concentrations (loading rates). After an exposure duration of 72h the EC50 (growth rate) was determined to be 34 mg/L (nominal) and the EC10 25.4 mg/L.