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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 inhibitory growth concentration (IGC50) value of Piperazine compound with phosphoric acid in Tetrahymena pyriformis in a 46 h study on growth inhibition effect was estimated to be 1467.231  mg/L.Thus,considering the CLP Criteria for aquatic classification of the substance , it is concluded that Piperazine compound with phosphoric acid does not exhibit toxicity to microorganisms.

Key value for chemical safety assessment

EC50 for microorganisms:
1 467.231 mg/L

Additional information

The inhibitory growth concentration (IGC50) value of Piperazine compound with phosphoric acid in Tetrahymena pyriformis in a 46 h study on growth inhibition effect was estimated to be 1467.231 mg/L.Thus,considering the CLP Criteria for aquatic classification of the substance , it is concluded that Piperazine compound with phosphoric acid does not exhibit toxicity to microorganisms.