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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

One reliable (Klimisch 2) study was available (Hofer, 1991). However, this study cannot be considered as a key study for the CSA because it used only one exposure concentration at which no effects on development, growth, mortality, etc. were observed. The resulting unbounded NOEC value is therefore not suitable for PNEC derivation. Further long-term testing is not considered necessary because the results of the CSA indicates safe use using the PNEC derived based on acute toxicity data only.

Key value for chemical safety assessment

Additional information

In the study of Hofer (1991), several experiments were conducted with freshly fertilised eggs, eggs in the eye dot phase, and 1-yr-old fish (rainbow trout, Oncorhynchus mykiss). At the single concentration tested (0.98 mg/L, mean measured), no effects on development, growth, mortality, etc. were observed in these experiments. The results of this study can be considered reliable but should not be used for PNEC derivation as only one (rather low) concentration was tested and only an unbounded NOEC is available from this study.