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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

In a 56 day study adult earth worms of the species Eisenia fetida were exposed to Octadecanoic acid, sulfo-, potassium salt at nominal concentrations of 0 mg (control), 62.5 mg, 125 mg, 250 mg, 500 mg and 1000 mg/kg dry weight in accordance with the OECD 222 guideline. The mortality and the body weight change of the adult worms was observed and recorded on day 28. The reproduction, mean number of juveniles per test vessel 56 days after application was observed. The most sensitive endpoint was the reproduction by count of juvenile worms. For this endpoint an EC10 = 478 mg/kg (dry weight) was established.

Key value for chemical safety assessment

Long-term EC10, LC10 or NOEC for soil macroorganisms:
478 mg/kg soil dw

Additional information