Registration Dossier
Registration Dossier
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EC number: 205-502-5 | CAS number: 141-79-7
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 115.5 mg/L
Additional information
The toxicity of mesityl oxide to activated sludge has been investigated according to EOECD 209 guideline. Based on measured inhibition rates, the 3-hour EC10 and EC20 and their 95% confidence limits were determined. The determination of a 3-hour EC50 failed because up to the highest nominal test concentration of 1000 mg/L less than 50 % inhibition was noted after three hours incubation. Nevertheless, the 3-hour EC50 is clearly higher than 1000 mg/L under the present test conditions.
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