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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Administrative data

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Description of key information

Based on an OECD 222 guideline study the NOEC for earthworm reproduction was therefore set at 500 mg/kg soil dw. The EC10, EC20 and EC50 endpoints for earthworm reproduction were estimated by probit analysis to be 213, 323, and 712 mg/kg soil dw, respectively.

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
712 mg/kg soil dw
Long-term EC10, LC10 or NOEC for soil macroorganisms:
500 mg/kg soil dw

Additional information

The chronic toxicity of soil-incorporated aminoethylpiperazine to earthworms (Eisenia fetida) was determined in artificial soil containing 10% peat.

There was no dose-related adult mortality during the test; therefore the NOEC for mortality was concluded to be 1000 mg aminoethylpiperazine/kg dry soil.

There was no evidence of a dose-related effect on adult growth during the test; therefore the NOEC for adult growth was concluded to be 1000 mg aminoethylpiperazine/kg dry soil.

A statistically significant reduction in juvenile production was observed at 1000 mg/kg soil dw, the highest concentration tested, and the reproductive NOEC (the highest concentration at which there was no statistically significant effect) was 500 mg aminoethylpiperazine/kg soil dw. The EC10, EC20 and EC50 for reproduction (Day 56) were estimated to be 213, 323 and 712 mg aminoethylpiperazine/kg dry soil, respectively.