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EC number: 700-323-3 | CAS number: 908020-52-0
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The 3-h EC50 value is >100 mg/L in activated sludge from a municipal sewage treatment plant.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 100 mg/L
Additional information
The effect of EEA-NH4 on microorganisms was determined in a GLP-compliant study according to OECD guideline 209 (NOTOX, 2008).
In this limit test, microorganisms in activated sludge from a municipal sewage treatment plant receiving predominantly domestic sewage were exposed for 3 hours to 100 mg/L EEA-NH4 (in duplicate). The test solution was continuously aerated and stirried.
No significant inhibition (1%) of the respiration rate of the sludge was recorded at 100 mg/L EEA-NH4. Therefore, the EC50 of EEA-NH4 was determined at >100 mg/L (based on nominal concentrations).
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