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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

The substance showed no acute toxicity to microorganisms in sewage sludge.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
305 mg/L

Additional information

The aquatic toxicity of the test item FAT 40849/A TE to microbial activity in sewage sludge was tested in a valid GLP activated sludge respiratory inhibition test in accordance with EU Method C.11. Activated sludge from a treatment plant processing predominantly domestic sewage was exposed to the substance for 3 hours under aerated conditions to a series of test concentrations ranging from nominal 10 to 1000 mg/L. The substance had no inhibitory effect (inhibition of <10%) on the sludge activity up to and with the test concentration of 320 mg/L and the activity was only slightly inhibited (<18%) at the highest test concentration. The EC50 value for inhibition hence was >1000 mg/L and the NOEC was 305 mg/L.