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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

Long-term studies on fish are not available for N-butyl-2,2,6,6-tetramethylpiperidin-4-amine (N-butyl TAD). A long-term test with the test substance is not required as the risk assessment reveals no unacceptable effects of the test substance on aquatic organisms (risk characterization ratios <1).

Key value for chemical safety assessment

Additional information

According to column 2 in Annex IX of Regulation (EC) 1907/2006, long-term toxicity tests with aquatic organisms are not needed if the outcome of the chemical safety assessment indicates no unacceptable effects on aquatic organisms. In a first step, the PNEC for the aquatic environment is derived on short-term toxicity.

The risk for the aquatic compartment being exposed to N-butyl-2,2,6,6-tetramethylpiperidin-4-amine (N-butyl TAD) is acceptable as the risk characterization ratios are below 1. Therefore, further tests are not required.