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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

With high probability acute not harmful to fish

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
527 mg/L

Additional information

Available information on the short-term toxicity clearly indicates that cyclohexanone is acutely not harmful to fish. The most reliable study was performed under flow through conditions using a method comparable to OECD 203. In this study a LC50 (96h) of 527 mg/L for Pimephales promelas was determined (based on measured concentrations; Brooke et al. 1984). This result is supported by the study, conducted under static test conditions, by Juhnke and Luedemann (1978) in which LC50(48h) values of 536 and 752 mg/l for Leuciscus idus were determined.