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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

No bioaccumulation data are available on insoluble salts of neodymium but literature data provide information on the soluble salt neodymium nitrate (see Section 5.3.1).  A BCF value of 634 was recorded after 29 days, with BCF values reducing over time.  The half-life for internal organs was calculated as 6.30 days.  Neodymium nitrate is therefore eliminated from fish and does not readily bio-concentrate.  By analogy to neodymium nitrate, dineodymium tricarbonate is unlikely to bioaccumulate, and furthermore being poorly water soluble it is expected to be less bioavailable than the soluble salt tested.

Key value for chemical safety assessment

Additional information