Registration Dossier
Registration Dossier
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EC number: 203-378-7 | CAS number: 106-25-2
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The substance exhibits an EC50 of 241 mg/L and an EC10 of 129 mg/L for STP microorganisms.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 241 mg/L
- EC10 or NOEC for microorganisms:
- 129 mg/L
Additional information
One reliable study is available for the registered substance. The toxicity to microorganisms was studied according to OECD TG No. 209 and GLP. The substance was tested at concentrations of 35.0, 70.1, 140.2, 280.3, 560.6 mg/L (nominal) and the inoculum (microbial source) was activated sludge of a predominantly domestic sewage. The validity criteria were fulfilled. The EC50 for inhibition of respiration of activated sludge after 3 h contact time was 241 mg/L, the EC10 was 129 mg/L.
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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