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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 208-901-2 | CAS number: 546-46-3
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
OECD 301B (CO2 evolution test): 97% in 28 days, OECD 301E (Modified OECD screening test): 100% in 19 days, OECD 302B (inherent biodegradability: Zahn-Wellens test) 85% in 14 days
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
The effect of trizinc dicitrate when in solution is not expected to differ significantly from the effects of the citrate anion (H7C6O7-) and the metal ion separately, so exposure will be to citric acid and the metal ions separately. Therefore the ready biodegradation of Trizinc dicitrate is assessed based on available read across data from citric acid and zinc. However, the ready biodegradability of the metal ion does not need to be determined in accordance with Column 2 of REACH Annex VII, since it is inorganic. The available data on citric acid is thus sufficient to fulfil the information requirements for this endpoint.
Trizinc dicitrate is also found to be readily biodegradable by bacteria from available supporting study after a lag time of 20 hours.
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.
