Registration Dossier
Registration Dossier
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EC number: 937-221-5 | CAS number: -
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The 96-h LL50 (Fish: Oncorhynchus mykiss) of the reaction mass of neodymium carbonate and praseodymium carbonate was > 100 mg/L. Hence, the reaction mass of neodymium carbonate and praseodymium carbonate is not harmful for the tested fish species.
Key value for chemical safety assessment
Additional information
One experimental study, scored as Klimisch 1 and selected as key study, showed that the reaction mass of neodymium carbonate and praseodymium carbonate was not acutely harmful to the fish species tested (Harris S., 2013), therefore warranting no classification.
This result was further corroborated by three other short-term studies, scored as Klimisch 2 and flagged as supporting study, on analogues of the reaction mass of neodymium carbonate and praseodymium carbonate: dicerium tricarbonate, neodymium oxide and praseodymium(III,IV) oxide (Bätscher R., 2007a; Bazzon M., 2000). In these studies performed on fish, no mortality occurred at the nominal loading rate of 100 mg/L.
Reaction mass of neodymium carbonate and praseodymium carbonate |
Dineodymium tricarbonate |
Dipraseodymium tricarbonate |
Dicerium tricarbonate |
Neodymium oxide |
Praseodymium(III,IV) oxide |
|
Acute toxicity to fish - LL50 (OECD 203) |
> 100 mg/L |
no data |
no data |
> 100 mg/L |
> 100 mg/L |
> 100 mg/L |
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