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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 acute toxicity of the substance to bacteria (activated sludge) was investigated in a static test according to ISO 8192 -1986/B "Activated sludge respiration inhibition". After 3 hours of exposure an EC50 of 211 mg/L (nominal) was determined using Probit-analysis.

Key value for chemical safety assessment

EC50 for microorganisms:
211 mg/L

Additional information

In sewage treatment plant, the test substance might be present in both dissolved and undissolved form. To represent a more realistic situation, the tested concentrations are much higher than the water solubility of the test substance (i.e. 10.3 mg/L). Therefore the reported concentrations represent the combined effect of dissolved and undissolved test substance on the activity of microorganism in the sewage treatment plant.