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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Method C.11 - Activated Sludge Respiration Inhibition Test, Directive 88/302/EEC. Published in OJ L 133 1988.
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 EC50was found to be:

                                                           EC50> 1000 mg.L-1

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.