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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
800 mg/L

Additional information

A short-term respiration inhibition test according to OECD guideline 209 using domestic activated sludge as inoculum was identified as key study. After 180 minutes an EC10 of 800 mg/L and an EC50 >1000 mg/L were estimated, related to the nominal concentration.

A preliminary test with activated sludge was performed according to OECD 209 to determine the respiration inhibition potential of the test item. The test item was tested at 10, 100, 1000 mg/L. After 3 hours no dose responce or respiration ihibition on the activated sludge was observed. The 3-h EC50 was determined to be >1000 mg/L. Therefore, no definitive test was performed.