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Environmental fate & pathways

Biodegradation in soil

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In a guideline study in accordance to U.S.-EPA already after 2 days < 1 % of the radioactivity was left as methyl methacrylate in soil extracts, at either rate of application. About 60 - 70 % of the radioactivity was lost due to evaporation of the parent compound at both concentration levels. Of the total volatiles measured, 28.2 (low level) and 15.7 (high methyl methacrylate level) of applied compound over the 28-day study period was accounted to CO2 emissions. The indications are that methyl methacrylate is rapidly lost from soil either by evaporation or degradation. The estimated half-life for methyl methacrylate in soil was less than one day at both concentration levels. In addition, the test substance shows low adsorptive properties (log Koc 1.1) and is readily biodegradable.