Registration Dossier
Registration Dossier
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EC number: 252-899-6 | CAS number: 36177-92-1
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The toxicity test of the test substance to microorganism has been shown an effect level >100 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 100 mg/L
Additional information
The key study for the determination of the toxicity to microorganisms has been performed according to guideline 87/302/EEC page 118-122 in compliance with GLP. In a static test with freshwater, activated, domestic sludge has been incubated with different concentration of the test substance (concentration of 1.0 mg/L to 100.3 mg/L) for 3 h. The respiration rate has been determined and an effect level >100 mg/l is estimated.
In a supporting study, the toxicity of the test substance to microorganisms has been tested in a respiration inhibition test according to guideline DIN 38412 Part 12 draft. The study is briefly reported and no further details on test conditions are available. The static study showed an effect concentration (EC50) of 70 mg/L of the nominal concentration based on the metabolic rate after 24 h of exposure. The EC10 level has been determined to be 27.2 mg/L after 24 h.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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