Registration Dossier
Registration Dossier
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EC number: 221-244-6 | CAS number: 3040-44-6
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The inhibition of the degradation activity of activated sludge is not anticipated when the substance is introduced in appropriately low concentrations.
Key value for chemical safety assessment
Additional information
Experimental data for hydroxethylpiperidine (CAS 3040 -44 -6) are available from a short-term respiration inhibition test with activated sludge from a municipal wastewater treatment plant. The study was performed according to the OECD Guideline 209 and under GLP. The exposure duration was 180 min. The 180 -min EC10 was determined to be 73 mg/L. The EC20 and the EC50 were higher than the highest test concentration of 1000 mg/L (BASF SE, 2018, study no.: 08G0154/18G236).
In addition, data from a short-term respiration inhibition tests with activated sludge from an industrial wastewater treatment plant are available for the test substance (CAS 3040 -44 -6). The tests were performed according to ISO 8192. The exposure duration was 30 minutes. The 30min EC20 was determined to be > 100 mg/L (BASF AG, 1985; Study no.: 1251)
Based on the available experimental data, it can be concluded, that the degradation activity of activated sludge is not anticipated when the substance is introduced in appropriately low concentrations.
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