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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

In an activated sludge respiration inhibition test the EC20 was found to be greater than 100 mg/L.

Key value for chemical safety assessment

Additional information

Respiration Inhibition Test

In a 30 min respiration inhibition test conducted with activated sludge obtained from an industrial wastewater treatment plant, Methylpyrrolidin was found to have an inhibitory effect to respiration. The EC20 was determined to be greater than 100 mg/L.

Microtox assay

In this publication a test is described which was conducted to assess the toxicity of several chemicals including the test substance to different bacteria. Besides evaluating toxicities based on oxygen consumption (aerobic heterotrophs), gas production (methanogens) and Ammonia use (Nitrosomonas), the test substance was also tested in a Microtox test assay (Microbics corporation). This rapid test system is based on the biolimunescense of Photobacterium phopsphoreum. As a result, the IC50 value determined in this test system was 8000 mg/L.