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Toxicity to microorganisms

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Description of key information

Method C.11 - Activated Sludge Respiration Inhibition Test, Council Regulation (EC) No. 440/2008, published in O.J.L 142, 2008. 
GLP study

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information

Results of the respiration inhibition test:

On the basis of the effective concentrations describing the respiration inhibition of activated sludge caused by the test substance the EC50 was found to be:

EC50 > 1000 mg/L

Under the current experimental conditions, all tested concentrations in the main test provided no significant inhibition of respiration rate. Therefore it was not possible to calculate the EC50 value.