Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 216-913-4 | CAS number: 1696-20-4
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriately low concentrations.
Key value for chemical safety assessment
Additional information
The inhibiting effect of 4 -acetylmorpholine on the respiration activity of domestic activated sludge was investigated in a study according to OECD 209. The 30 min EC20 was determined to be larger than 100 mg/L (BASF AG, 1992; Study No. 91/1665/08/1). Taking this value, the inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriately low concentrations.
This assessment is supported by the results of a growth inhibition study with Pseudomonas putida according to German Industrial Standard DIN 38412, part 8 (BASF AG, 1992; Study No. 91/1665/70/2). The 16 -h EC10 and also the EC50 were determined to be greater than 10000 mg/L, therefore indicating a low toxicity towards bacteria.
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.
