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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

Tantalum is insoluble in water and not bioavailable to aquatic species. As an inorganic substance without any bioavailability, Ta cannot be metabolised. Under physiological conditions, Ta metal cannot be absorbed via skin or the gastrointestinal tract. Even in the case of administration via the oral route and ingestion, Ta will be eliminated via faeces without prior absorption (see also IUCLID section 7.1). Thus, there is no potential for bioaccumulation and testing is scientifically unjustified.

Key value for chemical safety assessment

Additional information