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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

Using the PNECsoil value that was calculated by the equilibrium partitioning method, the risk characterization shows that the PEC/PNECsediment ratio for the aquatic environment is <1, indicating testing of effects on terrestrial plants can be waived for 2-hydroxyethyl methacrylate

Key value for chemical safety assessment

Additional information

The substance (2-hydroxyethyl methacrylate) has a log Pow value that is less than 3 (log Pow = 0.42), has a low potential for adsorption or binding to organic matter (no dissociable group; estimated Koc of 42.7) and is readily biodegradable. The distribution modeling (Mackay level III fugacity modeling) indicates that when 2-hydroxyethyl methacrylate is released to water, most of the substance will remain in water. If released to air, most of the substance will be transported to water and soil. If released to soil, most of the substance will remain in soil with a portion transported to water. In both the aquatic and soil compartments it is anticipated that HEMA will biodegrade rapidly and thus persistence in the aquatic and soil compartments is not anticipated. The predicted no effect concentration (PNEC) for soil was derived from the PNEC for freshwater using the equilibrium partitioning method. Using the PNECsoil value that was calculated using the equilibrium partitioning method, the risk characterization shows that the PEC/PNECsoil ratio for the aquatic environment is <1, indicating testing of effects on terrestrial plants can be waived for 2-hydroxyethyl methacrylate.