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Registration Dossier
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EC number: 236-050-7 | CAS number: 13122-18-4
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
tert-Butylperoxy-3,5,5-trimethylhexanoat was assessed in an activated sludge respiration inhibition test, according to the EU method C.11 and OECD guideline 209. The EC50 was determined at 327.02 mg/L and the NOEC was determined at 26.3 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 327.02 mg/L
- EC10 or NOEC for microorganisms:
- 26.3 mg/L
Additional information
tert-Butylperoxy-3,5,5-trimethylhexanoat was assessed in an activated sludge respiration inhibition test, according to the EU method C.11 and OECD guideline 209. In comparison to the inoculum controls the respiration rate of the activated sludge was inhibited dose-dependently in the concentration range from 55.1 - 510.5 mg/L, displaying inhibition rates from 14 up to 59.8 %. The respiration rate of the activated sludge was inhibited by 29.8 %, at 115.8 mg/L and by 38 % at 243.1 mg/L.
The EC50 value was determined as 327.02 mg/L and the NOEC at 26.3 mg/L.
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