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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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