Registration Dossier
Registration Dossier
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EC number: 939-292-8 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
EC50 > 100 mg/L
Key value for chemical safety assessment
- EC50 for microorganisms:
- 100 mg/L
Additional information
The activated sludge was exposed to Direct Brown 44 at a concentration of 100 mg/L. The respiration rate of each mixture was determined after aeration periods of 3 hours.The EC50 is higher than 100 mg/L.
The effect value is related to nominal concentration, since no analytical monitoring was performed.
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