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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 appropriate concentrations.

Key value for chemical safety assessment

Additional information

Methyl methacrylate was non-toxic to activated sludge in a test for ready biodegradability according to the modified MITI (I) protocol. 94 % biodegradation were achieved within 14 d, indicating the absence of toxicity up to 100 mg/L. This is consistent with other microbial toxicity test results and with test data in higher aquatic organisms.