Registration Dossier
Registration Dossier
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EC number: 942-741-0 | CAS number: -
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Acutely toxic for fish
Key value for chemical safety assessment
Additional information
In a guideline study conducted in accordance with OECD 203 test fish of the species Danio rerio were exposed to methylionone for 96 hours in a static system. The test was terminated after 96 hours and a LC50 of ca. 2.3 mg/l based on measured data was detected (BASF AG, 1998). Due to the use of relatively high concentrations of acetone as an organic solvente, this test was regarded as invalid by ECHA (Decision number: CCH-D-2114359360-53-01/F).
Accordingly, a second guideline study was conducted in accordance with OECD 203 to investigate the auqatic toxicity of the registered substance on the test fish species Danio rerio. Fish were exposed to the water accommodated fraction (WAF) of the test substance for 96 hours in a semi-static system.
After 96 hours of exposure, a LC50 of > 1.57 mg/L was determined based on measured concentration (BASF SE, 2020).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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