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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Link to relevant study record(s)

Description of key information

Three studies on non-arthropod soil macroorganisms were used in developing the soil PNEC. Results demonstrate that EC10 or NOEC values range from 6.2 mg/kg soil up to 250 mg/kg soil.

Key value for chemical safety assessment

Additional information

In one study, groups of earthworms were exposed to concentrations of 0, 63, 125, 250, 500, and 1000 mg/kg dw for 14 days. The test animals were examined for mortality, behaviour, health, and reproduction on days 7 and 14. 5% mortality was seen at the highest concentration. Effects to health were seen at the 500 and 1000 mg/kg dw concentrations. The 14 -day LC50 was > 1000 mg/kg dw, and the NOEC was 250 mg/kg dw. In a second study, adult E. albidus were placed in soil containing the test substance for 21 days. The adults were removed, and the cocoons incubated in the soil for another 21 days. The juveniles were then counted. The 21-day EC10 to E. albidus was 6.2 mg/kg dry weight. In a third study, groups of A. caliginosa were exposed to soil containing 25 -150 mg/kg soil of LAS for 28 days. Groups of E. crypticus were exposed to concentrations of 0, 10, 40, 60, 80, 100, or 120 mg/kg soil (nominal). EC10 values based on reproduction were 46 mg/kg soil for A. caliginosa, and >= 120 mg/kg soil for E. crypticus.