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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Algal Inhibition test 

Key value for chemical safety assessment

EC50 for freshwater algae:
0.74 mg/L

Additional information

A 72 hour algal inhibition test was conducted by exposing the algae Scenedesmus subspicatus to a range of concentrations of Fyrolflex BDP. No abnormalities were detected in any of the control or test cultures. Accordingly, EC50 >1.0 mg/L (nominal concentrations). The No Observed Effect Concentration (NOEC) for this end point was > 1.0 mg/l.

The EC50 value based on the average of the time-weighted mean measured test concentrations were greater than 0.74 mg/L. Correspondingly, the No Observed Effect Concentration (NOEC) for this end point, was greater than or equal to 0.74 mg.