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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Under the conditions of the key study (OECD 209 guideline method conducted according to GLP) the 3 hour NOELR is 100 mg/l.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
100 mg/L

Additional information

The key study (Desmares-Koopermans, 2003) was conducted according to the OECD 209 guideline under conditions of GLP. The study was performed on an activated sewage sludge from a primarily domestic source over a 3 hour exposure period in darkness. Inhibition of resipration was measured by CO2 evolution.

Under the conditions of the test the NOELR was determined to be 100 mg/l the highest loading rate tested.

The study was awarded the reliability score of 1 according to the criteria of Klimisch et al (1997).