Registration Dossier
Registration Dossier
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EC number: 419-480-1 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Under the test conditions, the test substance showed 18.2 % respiration inhibition of activated sludge at a concentration of 10000 mg/L. The EC50 was determined to be > 10000 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 10 000 mg/L
Additional information
A study conducted to EU test guidance Part C11 and OECD test guideline 209 in compliance with GLP to determine the toxicity of Reactive Blue 75311 on bacteria of the sewage sludge.
The activated sludge was exposed to test substance at three different concentrations, 100, 1000, and 10000 mg/L. The incubation time was 30 minutes with permanent aeration. The test substance showed 18.2 % respiration inhibition of activated sludge at a concentration of 10000 mg/L. The EC50 was determined to be > 10000 mg/L.
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