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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 407-250-3 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not readily biodegradable according to OECD criteria, but can be easily eliminated from water.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
In a ready biodegradability test according to OECD guideline 301A no DOC removal was observed (CIBA - GEIGY 1990). Hence, the substance is poorly biodegradable. A BOD5 test, in which no oxygen consumption was measured, confirms the poor biodegradabilty of Direct Yellow (CIBA - GEIGY 1990).
Additional information is given from a Zahn Wellens test (OECD 302B). After 3 hours 49.5 % DOC removal was measured. Hence, the substance is highly adsorptive on activated sludge and thus easily eliminable from water (CIBA - GEIGY 1996).
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.
