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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

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.