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Environmental fate & pathways

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A fugacity level III calculation, using a four compartment (air, water, soil and sediment) model has been conducted using the Mackay model (DeGroot, 2005). A 100 % release to the water compartment was assumed. Based on the results of the calculation, peracetic acid is expected to partition almost exclusively to the aquatic compartment (99.95 %) with the remainder to sediment (0.040 %), soil (0.002) and air (0.009 %). The measured Henry’s Law constant of 0.217 Pa m³ mol-1 indicates that volatilisation from surface water is not expected. Thus, high water solubility, low vapour pressure and low octanol-water partition coefficient lead to the conclusion, that peracetic acid is mainly found in the water compartment without removal via volatilisation.