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EC number: 202-597-5
CAS number: 97-63-2
Toxicity to microorganisms: 30-min EC50 1000-1800 mg/L (activated sludge)The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate concentrations.
Activated sludge inhibition data (ISO 8192) are available for
ethyl methacrylate and indicate a 30-min EC50 of 1000 -1800 mg/L.
Further MAA and the lower alkyl methacrylate category members up to the
BMA isomers show a low toxicity to micro-organisms while for 2-EHMA no
toxicity has been observed up to and above the limit of solubility. See
the following table:
Summary of effects on micro-organisms
16h EC10= 100 mg/l
16 h growth inhibition test, sensitive species
16h EC3= 100 mg/l
Bringmann and Kühn, 1976, 1980ª
14 d NOEC = 100 mg/l
Ready biodegradability test, OECD 310 C MITI (I)
30 min EC50=1000- 1800 mg/l
ISO8192 (OECD 209) respiration inhibition test
Hund and Fabig, 1989
18h EC10≥253.6 mg/l
18 h growth inhibition test, sensitive species
Fabig and Hund, 1988
16h EC10> 281 mg/l*
16 h growth inhibition test
21 d NOEC = 100 mg/l
OECD 301 C
Modified MITI (I) Test
* No growth inhibition with saturated
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