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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

OECD 209 Activated sludge respiration inhibition 3 hour EC50 421 mg/L, EC10 233 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
421 mg/L
EC10 or NOEC for microorganisms:
233 mg/L

Additional information

The toxicity of the test item OLEIC_DimerFA_TETA_PAA (batch no.: BB 100860 V1) to activated sludge was determined in accordance with OECD Test Guideline 209 at Akzo Nobel, Arnhem, The Netherlands.


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


The EC50of OLEIC_DimerFA_TETA_PAA for activated sludge after 3 hours contact time is 421 mg/L. The EC10,EC20 and EC80valuesare 233, 285 and 621 mg/L, respectively.


OLEIC_DimerFA_TETA_PAA is therefore considered not harmful to activated sludge.