Registration Dossier
Registration Dossier
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EC number: 234-454-8 | CAS number: 12004-35-2
Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
No data on the toxicity to aquatic plants other than algae are available for the test substance Nickel aluminate. However, there are reliable data available for different structurally analogue test substances.
The environmental fate pathways and ecotoxicity effects assessments for Ni metal and Ni compounds is based on the observation that adverse effects to aquatic, soil- and sediment-dwelling organisms are a consequence of exposure to the bioavailable Ni-ion, released by the parent compound. The result of this assumption is that the ecotoxicology will be similar for all soluble Ni substances used in the ecotoxicity experiments. Therefore, data from soluble nickel substances are used in the derivation of ecotoxicological and environmental fate endpoints, based on the Ni-ion.
Freshwater:
From the database of chronic nickel toxicity to freshwater plants, 6 individual NOEC/L(E)C10 values reported for 2 higher plant species. NOEC/L(E)C10 values range from 8.2 to 75 μg Ni/L for Lemna minor (Antunes, 2007) and 50 to 80 μg Ni/L for Lemna gibba (Klaine and Knuteson, 2003) for a final range of 8.2 to 80 μg Ni/L for the higher plants Lemna gibba and Lemna minor.
The following table indicates those NOEC or EC10 values of high quality that have been carried forward for the HC5-& PNEC derivation
Key Study (freshwater plant) |
Selected values for the most sensitive endpoints used for derivation of the freshwater HC5 |
||
Species |
Endpoint |
Value (s) (ug/L) |
|
Klain & Knuteson, 2003 |
Lemma gibba |
EC10 |
70 |
Antunes, 2007 |
Lemna minor |
EC10 |
8.2-75.0 |
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