Registration Dossier

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:

Description of key information

For that endpoint, the registered substance exhibits a NOEC = 100 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
100 mg/L

Additional information

In the ready biodegradability study performed on the registered substance according to the OECD 301F guideline, a toxicity control has been realised (ibacon Project 108001163, see iuclid study record in section 5.2.1). In this toxicity control containing both, the test item and the reference item sodium benzoate, 36% biodegradation was noted within 14 days. Thus, the degradation was > 25% after 14 days. Therefore, it can be assumed that the test item is not inhibitory to the aerobic activated sludge microorganisms at a concentration of 100 mg/L.

Therefore, an ASRIT study is scientifically not necessary.