Registration Dossier
Registration Dossier
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EC number: 219-847-4 | CAS number: 2550-26-7
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The substance is readily biodegradable and a test on activated sludge respiration inhibition is not necessary. The substance was not inhibiting the microbial activity at a concentration of 5 mg/L in a ready biodegradability test.
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 5 mg/L
Additional information
As the substance 4 -phenylbutan-2 -one is readily biodegradable no test with microorganisms is necessary. The substance was not inhibiting to micro-organisms in the study on ready biodegradability at a test concentration of 5 mg/L. In the absence of a valid study on microbial toxicity, the result of the study on ready biodegradability can be used to derive a NOEC for toxicity to micro-organisms in accordance with ECHA guidance R.7b. The highest test concentration of 5 mg/L applied in the valid study on ready biodegradability was used as the NOEC in the hazard assessment.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
