Registration Dossier
Registration Dossier
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: 203-815-1 | CAS number: 110-91-8
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The inhibition of degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.
Key value for chemical safety assessment
Additional information
The effect of morpholine on aquatic microorganisms was tested in multiple studies. Three studies were performed according to OECD 209 - one with domestic activated sludge (BASF AG, 1990), two with industrial activated sludge (BASF AG, 1980 and 1990). In all cases was the EC20 (30 min) > 1000 mg/L. Therefore it can be concluded that the inhibition of degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.
In another study the effect of morpholine on Pseudomonas putida was tested in a growth inhibition test according to Bringmann. The resulting EC3 (16 h) was 310 mg/L (Bringmann & Kühn, 1977). Based on this result inhibition of degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.
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.
