Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

In contact with water, acrylic acid will be essentially stable to hydrolysis. Photodegradation in air will proceed slowly.

In surface water, sewage treatment plants and soil rapid degradation is expected, since acrylic acid was readily biodegradable in several OECD 301 -Screening tests. In a well-documented study on biodegradation in soil, performed according to U.S. EPA Pesticide Assessment Guidelines, Subdivision N, § 162- 1, acrylic acid was rapidly metabolized under aerobic conditions. After 3 days no acrylic acid was detected in soil extracts. The half-life for acrylic acid under these conditions was estimated to be less than 1 day. From the presented simulation test in soil it can be concluded that acrylic acid is readily biodegradable in this soil type (sandy loam).

Based on an experimental log Pow and subsequently calculated BCF, a potential for bioaccumulation has not to be expected. Adsorption of acrylic acid to the solid soil phase is not expected.

Fugacity model calculations (Mackay Level I) revealed the hydrosphere as the main target compartment for distribution which is also indicated by the substance's physicochemical properties.

 

 

Additional data attached (Technical IUCLID 5 Dossier, Section 13).