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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-135-5 | CAS number: 7440-25-7
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Remarks:
- identification of degradation products
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- other:
- Endpoint:
- biodegradation in water: sediment simulation testing
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because direct and indirect exposure of sediment is unlikely
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance is highly insoluble in water
Referenceopen allclose all
Description of key information
Tantalum is an inorganic substance and hence cannot be biotically degraded. Therefore, simulation tests investigating the biodegradation of the substance in surface water and sediment as well as the identification of degradation products is technically not feasible. Additionally, tantalum metal is practically insoluble in water as demonstrated by the T/D test according to OECD 29 .
Key value for chemical safety assessment
Additional information
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.
