Registration Dossier
Registration Dossier
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EC number: 434-280-4 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The effect of the test substance on the respiration of activated sewage sludge micro-organisms was assessed according to OECD Test Guideline 209. The effect concentration was assessed at 3-Hour and gave an EC50 of 540 mg/L. The No Observed Effect Concentration (NOEC) after 3 hours exposure was 100 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 540 mg/L
- EC10 or NOEC for microorganisms:
- 100 mg/L
Additional information
Activated sewage sludge was exposed to an aqueous solution of the test material for a period of three hours at 21 °C with the addition of synthetic sewage as a respiratory substrate. The rate of respiration was determined after 30 minutes and three hours contact time.
The effect of the test material on the respiration of activated sewage sludge micro-organisms gave a 3-Hour EC50 of 540 mg/L. The No Observed Effect Concentration (NOEC) after 3 hours exposure was 100 mg/L.
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