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Environmental fate & pathways

Biodegradation in water: screening tests

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No experimental data on PMVE biodegradation in water are available. In fact, on the grounds of the physico-chemical properties and environmental fate assessments of the substance, no exposure to the aquatic environ ment is expected. Moreover the substance profile itself indicates the difficulty to properly test PMVE and provide meaningful results of its biodegradation in aqueous systems as well as in sediment. Nevertheless, in order to evaluate the biodegradation hazard profile of PMVE, the BIOWIN v.4.10 model has been applied. The prediction obtained from the model suggests that PMVE is not ready biodegradable. However, no adverse effects on aquatic organisms are expected because of no partitioning of PMVE into water. 

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On the grounds of the physico-chemical properties of PMVE (Boiling point of -26 °C, slight water solubility, high Henry Law Constant, low Kow, low Koc) and the results on environmental fate obtained from EQC Fugacity III Model (Version 2.02, The Canadian Centre for Environmental Modelling and Chemistry, May 2003), the substance is expected to primarily and rapidly partition to the atmosphere. No exposure to the aquatic environment is consequently expected.

The substance profile itself indicates the difficulty to properly test PMVE and provide meaningful results of its biodegradation in aqueous systems as well as in sediment and soil. Nevertheless a further assessment based on Quantitative Structure Activity Relationships (QSARs) has been however applied.

The prediction of the BIOWINv.4.10model(EPI Suite v.4.0)suggests that PMVE is not ready biodegradable. Nevertheless no adverse effects on water organisms are expected because of no partitioning of PMVE into water.