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Ecotoxicological information

Short-term toxicity to fish

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Link to relevant study record(s)

Description of key information

The substance is with high probability acutely not harmful to fish.

Key value for chemical safety assessment

LC50 for freshwater fish:
100 mg/L

Additional information

A study on a close structural substance (CAS 16090-02-1) is available in order to determine the acute toxicity to fish. The study demonstrates that the substance is with a high probability acutely not harmful to fish (LC50 value in fish exceeds 100 mg/L). Therefore, also the substance with CAS 133-66-4 is considered with high probability not acutely harmful to fish.