Registration Dossier
Registration Dossier
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EC number: 239-741-1 | CAS number: 15667-10-4
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
No toxicity test with cyclohexylidenebis[tert-amyl] peroxide is available for micro-organisms. These data are thus read-across from a study performed with cyclohexylidenebis[tert-butyl] peroxide.
The 3-hour EC10 and the 3-hour EC50 of the test substance cyclohexylidenebis[tert-butyl]peroxide were determined to be > 20 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 20 mg/L
- EC10 or NOEC for microorganisms:
- 20 mg/L
Additional information
No toxicity test with cyclohexylidenebis[tert-amyl] peroxide is available for micro-organisms. These data are read-across from a study obtained with cyclohexylidenebis[tert-butyl]peroxide.
The acute toxicity of cyclohexylidenebis[tert-butyl]peroxide on micro-organisms present in activated sludge was evaluated using a 3 -hour static test according to OECD guideline no. 209. Three test solutions (2, 10 and 20 mg/L) were tested. The respiration rate of the test solution at the highest concentration (20 mg/L) was equivalent to the respiration rate of the first control. Therefore, the oxygen consumption rate of the two other test solutions was not determined. The 3-hour EC10 and the 3-hour EC50 of the test substance cyclohexylidenebis[tert-butyl]peroxide were determined to be > 20 mg/L.
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