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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

As key study a GLP test according to OECD 209 was performed with modified Isophoronediamine (BASF AG 2005, report no. 08G0405/053154). As inoculum actived sludge from a municipal wastewater plant in Mannheim/Germany was used, the pH of the test solutions was adjusted. The EC20 after 180 min was determined to be 450 mg/L (BASF AG, 2005). The test is valid according to OECD criteria.