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Ecotoxicological information

Toxicity to microorganisms

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Link to relevant study record(s)

Reference
Endpoint:
activated sludge respiration inhibition testing
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Reason / purpose:
reference to same study

Description of key information

NOEC (28 d) ≥ 3 mg/L (nominal, toxicity control of EU Method C.4-E)

Key value for chemical safety assessment

Additional information

No study testing the toxicity of the substance to microorganisms is available. However, the toxicity control set up in the frame of the ready biodegradability study, provides reliable data in order to cover this endpoint. The test was conducted according to the EU Method C.4-E and GLP. Domestic, non-adapted sewage sludge was used as the inoculum in a static, aerobic, freshwater test system. The toxicity control contained 3 mg/L test item and 2.9 mg/L reference substance (acetic acid, sodium salt). 39% degradation occurred after 14 and 28 d resulting in a NOEC (28 d) ≥ 3 mg/L (nominal).