Registration Dossier
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EC number: 283-042-4 | CAS number: 84539-54-8
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
Fe(3Na)EDDHMA, Eisenia foetida foetida, OECD 207: NOEC(14) >= 1600 mg/kg dry soil
Key value for chemical safety assessment
- Long-term EC10, LC10 or NOEC for soil macroorganisms:
- 1 600 mg/kg soil dw
Additional information
No data are available of Fe(3Na)EDDHSA concerning toxicity to soil macroorganisms except arthropods. However, a read-across is intended to Fe(Na)EDDHMA (CAS 84539-53-7), which was investigated according to the OECD Guideline 207 on Earthworm Acute Toxicity Test. (For further details on the Read-across procedure, please refer to the separate read-across statement.)
Earthworms of the species Eisenia foetida foetida were exposed to 5 concentrations of the test item in medium for 14 days. Milli-RO water (tap water purified by reverse osmosis) was used to dissolve the test substance, before mixing it with the artificial soil. 40 Earthworms were exposed to the blank and the highest concentration, i.e. 10 per vessel, and 10 earthworms were exposed to the concentrations in between. The concentrations of the test substance in the final study were nominally 0.16, 1.60, 16, 160 and 1600 mg/kg dry mass of artificial soil (further referred to as dry soil).
No test substance related mortality or other effects to the earthworms were recorded at any of the concentrations tested throughout the whole 14-day period of exposure. There was a reduction in mean earthworm mass during the test at all concentrations, which can be explained by the absence of food during the exposure period. The reduction was not test substance related. In the control, no earthworms died or showed other effects during the total exposure period of 14 days. The average loss of biomass of the earthworms in the controls did not exceed 20%.
Finally, under the conditions of the present study the test substance did not induce significant acute mortality of Eisenia foetida foetida at or below 1600 mg/kg dry soil after 14 days of exposure (NOEC).
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