Registration Dossier
Registration Dossier
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EC number: 203-419-9 | CAS number: 106-65-0
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Activated sludge respiration inhibition: according to OECD Test Guideline No. 209 gave an EC50 value >1000 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
Additional information
An activated sludge respiration inhibition test has been undertaken following OECD Test Guideline No. 209 using the unadapted sludge from a municipal treatment plant. The test was performed under static conditions with 7 concentrations within the range 32 – 1000 mg/L. The respiration rates of control, reference and test item concentrations were measured after an exposure period of three hours, and the inhibitory effects of the test and reference item were determined in comparison to the control respiration rates.
The EC50value was calculated by sigmoidal dose-response analysis to be >1000 mg/L.
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