Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

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Additional information

The adsorption and desorption characteristics of butyl acrylate (BA) to five soils, a loamy sand, a clay loam, two loams and an aquatic sediment, were determined in a guideline study according to EPA guidelines - CFR 40 section 796.2750 and GLP regulations. BA was weakly adsorbed onto the soils and sediment. As related to the carbon content of the individual soils, the average Koc for the adsorption step was 88.4. This places BA in a medium to high mobility class for adsorption to soils. Thus, the potential for adsorption to soil, sediment, and suspended solids is low.

The Henry's Law constant can be calculated by validated Q(SAR) such as EPI Suite v3.20. Henry's Law Constant was calculated to be 21.9 Pa*m3/mol indicating slow evaporation of the substance from the water surface into the atmosphere.

Distribution modeling using Mackay Level I indicates that butyl acrylate is likely to partition to the air compartment (94.6 %) with the remainder partitioning into water (5.2 %); negligible amounts are predicted to occur in other environmental compartments (soil, sediment) (Level I Fugacity, 2008).

Based on the physical chemical properties of butyl acrylate, the atmosphere is the main target compartment for distribution and only small amounts will remain in the hydrosphere and geosphere.