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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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.