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Environmental fate & pathways

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Many valid studies are available dealing with the soil and sediment sorption of acetophenone. Various soils and sediments were tested. According to the available and reliable data obtained via guideline studies, the soil sorption coefficient Koc of acetophenone was determined to be in the range between 9 and 95. According to the classification of Blume & Ahlsdorf (1993), acetophenone can be regarded as a substance with very low to low binding strength to organic matter of soil and sediments. Henry's Law constant was determined by the bubble column technique and GC/FID analysis, by measurement of optical absorbance, and by an equilibrium gas stripping method. The experimentally derived Henry's Law constants were in the range between 0.92 and 1.08 Pa m³/mol at 25°C. Based on the results of Betterton 1991, the Henry's Law constant at 20°C was calculated to be 0.766 Pa m³/mol. The results indicate that acetophenone can be regarded as moderately volatile from aqueous solution.

Based on the physical-chemical properties the environmental distribution was calculated using Mackay Level I. According to the calculation water is the main target compartment (96%) and to a minor extent air (2.9%). The other compartments were not relevant (in total ca. 1%).