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EC number: 233-071-3 | CAS number: 10028-18-9
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
Several studies investigating the toxicity of Ni to soil macroorganisms were identified as key studies, and used for derivation of the HC5 and terrestrial PNEC. The lowest NOEC/EC10 value was 47.6 mg Ni/kg dw.
Key value for chemical safety assessment
- Long-term EC10, LC10 or NOEC for soil macroorganisms:
- 47.6 mg/kg soil dw
Additional information
Chronic data are available for different species of non-arthropod soil invertebrates. NOEC/EC10 values range from 46.5 mg Ni/kg for reproduction by the earthworm Eisenia fetida (University of Ghent and Euras, 2005) to 1140 mg Ni/kg for reproduction by E. fetida (University of Ghent and Euras, 2005). Below are the accepted high quality studies for non-arthropod soil macro-organisms used for derivation of the HC5 and terrestrial PNEC.
Key Study (Soil macro-organisms) | Selected values for the most sensitive endpoints used for derivation of the terrestrial HC5 | ||
Species | Added NOEC or EC10 (mg/kg dw) | Total NOEC or EC10 (mg/kg dw) | |
University of Ghent and Euras, 2005 | Eisenia fetida | 46.5-1100 | 47.6-1140 |
Eisenia fetida | 46.5-1110 | 47.6-1140 | |
Lock and Janssen, 2002 | Eisenia fetida | 180 | 180 |
Enchytraeus albidus | 180 | 180 | |
Folsomia candida | 320 | 320 | |
Scott-Fordsmand et al., 1998 | Eisenia veneta | 85 | 91 |
Scott-Fordsmand et al., 1999 | Folsomia fimetaria | 173 | 179 |
Ma, 1982 | Lumbricus rubellus | 842 | 859 |
Aute toxicity LC50values range from 52 mg Ni/kg dw for Lumbicis terrestris (mortality) to 2,500 mg Ni/kg dw for Caenorhabditis elegans (mortality).
CONCLUSION: 47.6 mg/Kg dw of Ni (= 76.6 mg/Kg NiF2)
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