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Long-term toxicity to aquatic invertebrates

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long-term toxicity to aquatic invertebrates
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study scientifically not necessary / other information available
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The toxicity of the test material to aquatic invertebrates was investigated in a GLP study which was conducted in accordance with standardised guideline OECD 202. Complete immobilisation was observed after 48 hours in the two highest test concentrations; 10 % immobilisation was observed in the 3.1 mg/L test concentration. Sub-lethal effects of exposure were observed in the control and the 1.1, 3.1, 8.1 and 21 mg/L test concentrations. As the test material is already definitively classified for chronic aquatic toxicity at category 2 and a robust conclusion to be reached in the existing risk assessment long-term test on aquatic invertebrates, it was not considered scientifically necessary. In addition the difficulties maintaining the levels of test material for the duration of the test and analysing the test material, suggest that the long-term toxicity testing on aquatic invertebrates is unlikely to be technically feasible.

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Additional information