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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

In an ISO 8192 (equivalent to OECD 209) respiration inhibition test the EC50 was found to be greater than 10000 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
10 000 mg/L

Additional information

An ISO 8192 (equivalent to OECD 209) respiration inhibition test was conducted toassess the effect of the test substance on activated sludge microorganisms. Test concentrations were 100, 1800, 3200, 5600 and 10000 mg/L. Synthetic nutrient solution was added to a defined quantity of activated sludge. The test substance was administered by direct weighing. The concentration of inoculum was 6 g/L test substance.The sensitivity of the activated sludge used was rechecked with 3,5-dichlorophenol as a reference substance.

The EC50 was found to be greater than 10000 mg/L.