Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

OECD 209 Activated sludge respiration inhibition 3 hour EC50 314 mg/L, EC10 71 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
314 mg/L
EC10 or NOEC for microorganisms:
71 mg/L

Additional information

The toxicity of the test item DimerFA_PEPA_PAA (batch no.: BB 001694 V1) to activated sludge was determined in accordance with OECD Test Guideline 209 at Akzo Nobel, Arnhem, The Netherlands.


The toxicity of DimerFA_PEPA_PAAto activated sludge was determined at a contact time of 3 hours, using various concentrations of the test substance.


The EC50of DimerFA_PEPA_PAAfor activated sludge after 3 hours contact time is 314 mg/L. The EC10 and EC20valuesare 71 and 118 mg/L, respectively.


DimerFA_PEPA_PAAis therefore considered not harmful to activated sludge.