Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

There are no experimental data on transport and distribution of isobutyl acrylate available. The adsorption coefficient and Henry's Law constant can be calculated by validated Q(SAR) such as EPI Suite v3.20. Based on an estimated log Koc of 1.53, adsorption to solid soil phase is not expected. 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 isobutyl acrylate is likely to partition to the air compartment (95.8 %) with the remainder partitioning into water (4.1 %); negligible amounts are predicted to occur in other environmental compartments (soil, sediment) (Level I Fugacity, 2008).

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