Registration Dossier
Registration Dossier
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EC number: 234-809-7 | CAS number: 12034-59-2
Endpoint summary
Administrative data
Description of key information
Fish:
Lili (2005) determine the 96-h NOEC of Niobium(II)-Oxide to fish (Danio rerio) as above 100 mg/L, in accordance with the OECD Guideline 203 (1992). Scheerbaum (2003) conducted a limit test at the saturated solution level in accordance with the EC Directive 92/69/C1 L 383 A (1992) from 2003, which also did not reveal any toxic effect to D. rerio.
Aquatic Invertebrates:
The 48-h acute immobilisation test of Niobiumoxide to Daphnia magna was conducted under static conditions at the saturated solution level in accordance with the EC Directive 92/69/EC method C.2. No biological significant effect was observed.
Aquatic Algae:
In a 72-h acute toxicity study, the cultures of Desmodesmus subspicatus were exposed to Niobium(II)-Oxide at the saturated solution level under static conditions in accordance with the EC Directive 92/69/EC, C.3. Niobium(II)-Oxide was found not to inhibit the biomass growth and growth rate of the freshwater green alga D. subspicatus.
Microorganisms:
A Respiration Inhibition Test with activated sludge was performed for 3 h with the test item Niobium(II)-Oxide in accordance with the OECD Guideline 209 (1984). Results show that the test item is not toxic at concentrations ≤1000 mg/L to activated sludge of a municipal sewage treatment plant.
Additional information
This information is used in a read-across approach in the assessment of the target substance.
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