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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 939-509-6 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Based on the results of several studies 2,4-dichloro-1-nitrobenzene as the main constituent of the substance is not readily biodegradable. The biodegradation of 2,6-dichloro-1-nitrobenzene as the other main constituent of the substance was predicted using the Estimation Program Interface EPI-Suite version 3.2. The calculation resulted in the prediction that ready biodegradation is not expected.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
All available studies have several drawbacks as either the documentation is insufficient for assessment or industrial sludge was used for the test. In none of the studies biodegradation was observed, even using industrial sludge. Therefore, the studies can be part of a Weight-of-Evidence approach and indicate that 2,4-dichloro-1-nitrobenzene is not readily biodegradable. 2,6-dichloro-1-nitrobenzene as the other main constituent of the substance is also considered as not readily biodegradable.
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.
