Registration Dossier
Registration Dossier
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EC number: 221-220-5 | CAS number: 3033-62-3
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
EC20 > 720 mg/L after 30 min duration in activated sludge respiratory inhibition test.
Key value for chemical safety assessment
Additional information
Toxicity of the test substance to microorganisms was tested via two different assays. In the key study, an activated sludge respiratory inhibition test was conducted using a static freshwater test system. Nominal test substance concentrations used were 360 mg/L and 720 mg/L. The effect concentration derived in the test (respiration rate assessment) was EC20 > 720 mg/L after 30 min duration.
In a second test, toxicity of the test substance to Vibrio fisherii was checked using the Microtox method in a static saltwater test. Nominal test substance concentrations used were 1406, 2812, 5625, 11250, 22500 and 45000 mg/L. The effect concentrations derived in the test (light emission assessment) were EC50 = 27,500 mg/L after 5 min, EC50 = 21,000 mg/L after 15 min and EC50 = 16,750 mg/L after 30 minutes.
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