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Ecotoxicological information

Toxicity to microorganisms

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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.