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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

72-hour EC50 >619 µg/L, based on measured values, and >100 mg/L based on nominal values.
72-hour NOEC = 52 µg/L based on measured values, and 3.7 mg/L based on nominal values.

Key value for chemical safety assessment

EC50 for freshwater algae:
619 µg/L
EC10 or NOEC for freshwater algae:
52 µg/L

Additional information

Due to the fact that the water solubility of the test substance is very low, and consequently the analytical recovery as well, there is a great discrepancy between nominal and measured values. However, only a low inhibition in growth rate was observed at the highest test concentration, and it can be assumed that the theoretical EC50 is very much higher.