Registration Dossier
Registration Dossier
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EC number: 224-073-5 | CAS number: 4193-55-9
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
Some studies on the substance are available to assess the toxicity of the substance to microorganisms, but each of them presents some drawbacks: in two of them a water solution with 20 % of the substance was tested and for the other just the summary is available. The SefePharma Laboratories Ltd. study (1993) can be considered as the most reliable, since even if the tested substance concentration is low, the test was performed at 1000 mg/l, with no inhibitory effect. This set the result at > 200 mg/l, calculated on the substance effective concentration.
All of those studies demonstrate that the substance does not inhibit the degradation activity of activated sludge in concentrations higher or equal to 100 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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