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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Pseudokirchneriella subcapitata was exposed to five concentrations of XP-7866 at geometric mean, measured concentrations of 5.0 to 26 μg a.i./L and evaluated for effects on cell density, growth rate and yield. 
The 72 and 96-hour EC50, ErC50 and EyC50 values, based on cell density, growth rate and yield, respectively, were >26 μg a.i./L, the highest concentration tested. The 72 and 96-hour NOEC for each growth parameter was 26 μg a.i./L.

Key value for chemical safety assessment

EC50 for freshwater algae:
26 µg/L
EC10 or NOEC for freshwater algae:
26 µg/L

Additional information