Registration Dossier
Registration Dossier
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EC number: 239-741-1 | CAS number: 15667-10-4
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
No acute toxicity test with cyclohexylidenebis[tert-amyl] peroxide is available for fish. The acute toxicity to fish is thus read-across from data obtained with
cyclohexylidenebis[tert-butyl] peroxide. Under test conditions, no toxic effect has been observed at the maximum achievable solubility to fish.
Key value for chemical safety assessment
Additional information
No acute toxicity test with cyclohexylidenebis[tert-amyl] peroxide is available for fish. The acute toxicity to fish is thus read-across from data obtained with
cyclohexylidenebis[tert-butyl] peroxide.
The purpose of this study was to evaluate the influence of the test item on Danio rerio in accordance with OECD guideline no. 203 and EU method C.1. Young fish were exposed in an acute toxicity test to aqueous test media containing the test item for 96 hours at a range of concentration (10 and 100 mg/L (nominal)) under semi-static conditions.The frequency of the renewal periods was 24 hours. The measured concentrations deviated more than 20 % from the nominal during the experiment therefore the geometric mean of the measured concentrations were calculated in order to determine exposure concentrations. The calculated geometric mean concentrations were 0.47 and 0.64 mg/L. The 96 h-LC50 and 96 h-LL50 values were determined to be > 0.64 mg/L and > 100 mg/L. Under test conditions, it can thus be considered that the peroxide has no toxic effect at the maximum achievable solubility to fish.
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