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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

EC50 (3 h) > 1000 mg/L (nominal) (activated sludge, OECD 209)
No effects up to the limit of the water solubility of the substance.

Key value for chemical safety assessment

Additional information

The toxicity to microorganisms was investigated in a study with activated sludge (Mead, 1999) according to OECD guideline 209 and GLP. The respiration rate of the microbial population was measured after 30 min and 3 h, and the test resulted in an EC50 >1000 mg/L (nominal). Compared to the control, no effects were observed in the range of water solubility of the test substance. The reference test with 3,5-dichlorophenol was valid and resulted in 82% inhibition.