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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 introducted in appropriately low concentrations.

Key value for chemical safety assessment

EC50 for microorganisms:
113 mg/L

Additional information

Information on the toxicity of 2-hydroxyacetophenone towards the microorganism Tetrahymena pyriformis has been reported in three publications (Devillers, 2004, Jalali-Heravi, 2008 and Jiang et al. 2011). The reported IGC50 is the same in all three publications, even if different publications are mentioned as sources (no source, Cronin and Schultz, 2001, and Cronin et al., 2002, respectively). The IGC50 of 113 mg/L indicates that the inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.