Registration Dossier
Registration Dossier
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EC number: 271-663-3 | CAS number: 68603-55-4
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:
- 32.6 mg/L
Additional information
The test substance was tested at a nominal concentration of 20 mg organic carbon/L (corresponding to 32.6 mg test substance/L) in test medium following OECD 301B and EU-Method C.4 -C.
Aniline was chosen as positive control. Activated sludge was used as inoculum (concentration in the test 25.0 mg dry matter/L). The test was left running for 28 d. All validity criteria were met. Degradation of the positive control was 80% after 9 d. No inhibitory effect on the sludge bacteria was observed at the toxicity control samples. Under the study conditions, the no effect concentration of the test substance to sludge bacteria was determined to be greater than 32.6 mg/L (Laus, 2018).
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