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Long-term toxicity to fish

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The performance of a test for long-term toxicity to fish was considered scientifically not justified.
REACH Regulation (EC) No 1907/2006, Annex VIII, Sect. 9.1.3, Col. 2, states as follows: 9.1.3: The study (long-term toxicity to fish) does not need to be conducted if:
- there are mitigating factors indicating that aquatic toxicity is unlikely to occur, for instance if the substance is highly insoluble in water or the substance is unlikely to cross biological membranes”
The test item is practically insoluble in aquatic environment. In addition, based on the high Log Pow of 9.2, the substance is very unlikely to pass biological membranes. The substance is not toxic to all 3 trophic levels in acute tests. Therefore, the substance is not expected to be toxic in chronic tests. Thus, the CSR does not show a need for an additional long-term aquatic test. Risk assessment is based on the short-term tests for all trophic levels.

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