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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriately low concentrations.

Key value for chemical safety assessment

Additional information

The toxicity of 2-aminoethyldiisopropylamine (CAS 121-05-1) to aquatic microorganisms was investigated in a short-term respiration inhibition test conducted according to ISO 8192 (BASF AG, 1990; report no.: 2-1026-35/89a), using domestic activated sludge as inoculum. Respiration was measured after 30 minutes and 180 minutes. The 30-min EC20 was determined to be > 1000mg/L based on nominal test concentrations (180-min EC20 >1000mg/L).

 

In addition, there are supporting data from a further short-term respiration inhibition test available; the study was conducted similarly to OECD TG 209 (BASF AG, 1989). A 30-min EC20 was determined to be ≥ 659 mg/L based on nominal test concentrations. As inoculum, domestic activated sludge was used.

 

Based on the available data, it can be concluded for 2-aminoethyldiisopropylamine (CAS 121-05-1) that inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriately low concentrations.