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Toxicity to microorganisms

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Description of key information

Bacterial NOEC in biodegradation study for 2 -Ethylhexyl methacrylate (closely structuraly related category member): 100 mg/L, Modified MITI (I) test (CERI, 1998)

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
100 mg/L

Additional information

Data availability

There is no guideline study available for n-octyl methacrylate and 2 -EHMA. Bacterial toxicity information may be obtained from valid guideline biodegradation studies.


During ready biodegradability tests with 2 -EHMA, no inhibition of bacterial activity was observed for a test substance concentration of 100 mg/L in a 28 d modified MITI (I) test (OECD 301C). This will be carried forward as the NOEC for microbial toxicity.