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Environmental fate & pathways

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MPA was assessed in a 28 d DOC Die-Away test under GLP by Thiebaud (1994) to be readily biodegradable. Consequently, no further simulation

testing on the biodegradability of MPA and no study on its hydrolysis were necessary. As an additional information, hydrolysis of MPA can not be expected to occur as there are no parts of the molecular structure of MPA, that may have a susceptibility to hydrolysis.

Studies on bioaccumulation in water organisms and on adsorption of MPA were considered to be not necessary as the substance has an experimentally determined log Kow far below 3.0 and thus a low potential for bioaccumulation and for adsorption, respectively.