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Short-term toxicity to aquatic invertebrates

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Description of key information

The 48h-EC50 is >99 mg a.i./L in a OECD guideline 202 test with Daphnia magna under GLP (reliability 2, no specific chemical analysis).

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
99 mg/L

Additional information

The acute toxicity of 1 -methylpiperazine to Daphnia magna, was determined under static conditions according to OECD test guideline 202.

After 48 hours of exposure, there was no effect on the mobility in the control or treatments. The 48 -hour EC50 was estimated to be >100 mg/L or >99 a.i./L, the highest concentration tested based on nominal concentrations. The no observed-effect concentration (NOEC) was 99 mg a.i./L, the highest concentration tested.