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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 201-645-2 | CAS number: 85-98-3
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
Ethyl centralite was investigated as to susceptibility to microbial degradation and/or biotransformation under both aerobic and anaerobic conditions in both static (batch) and continuous culture systems.
Key value for chemical safety assessment
Additional information
Ethyl centralite was reduced under aerobic conditions in static culture to approximately 35% of initial concentration after 5 days. N-ethylaniline and Ethylphenylurea were identified as transformation products. However the substance appeared to be quite stable to anaerobic degradation in static culture.
This study has demonstrated that, in the presence of a rich nutrient medium, the compound Centralite (diethyldiphenylurea) is biotransformed. These results suggest that the compound may be successfully removed in a continuous treatment process operated in both aerobic and anaerobic modes. High nitrate concentrations are reduced to acceptable levels. Although increasing the concentrations of nutrients or carbon source supplements increased the disappearance of a compound it is hoped that suitable adjustments in operating parameters of a continuous system would make it possible to drive the disappearance to completion.
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.
