Registration Dossier

Ecotoxicological information

Short-term toxicity to fish

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Link to relevant study record(s)

Description of key information

Fathead minnows (Pimephales promelas) were exposed for 96 hours under static-renewal conditions to five mean measured concentrations of XP-7866 ranging from 11 to 153 μg a.i./L. The 96-hour LC50 value was >153 μg a.i./L, the highest concentration tested.  The 96-hour no-mortality concentration and the NOEC were 153 μg a.i./L.

Key value for chemical safety assessment

LC50 for freshwater fish:
153 µg/L

Additional information

Two short-term studies are currently available to study the acute toxicity of the test item. Due to low water solubility, maximales tested concentration were quite low (µg/L range). Howver, no toxicity were reported at the concentrations tested in both studies performed and reported in the dossier.