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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

The 2 hr. NOEC for inhibition of respiration by a nitrifying bacterial culture was 250 mg/L.  The 2 hr EC50 for inhibition of respiration by this same culture was determined to be 511 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
511 mg/L
EC10 or NOEC for microorganisms:
250 mg/L

Additional information

Several studies have evaluated the toxicity/inhibition potential of aminoethylpiperazine on both mixed and pure cultures of aerobic bacteria. A study examining inhibition of respiration by a culture of nitrifying bacteria is expected to give the most sensitive indication of this potential.