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Ecotoxicological information

Toxicity to terrestrial plants

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Link to relevant study record(s)

Description of key information

Waived: Direct/indirect exposure of the terrestrial environment is improbable.

Key value for chemical safety assessment

Additional information

In accordance with Column 2 of REACH Annex IX, the study does not need to be conducted if direct or indirect exposure of the soil compartment is unlikely. The substance (monomer) is not manufactured within the EU, and is only imported as its reacted (covalently-bound) form in polymers (i.e., polyols) having typically < 0.2% wt. residual unreacted monomer. There is no known or expected mechanism by which degradation of these polymers could result in re-formation of the monomer substance. Therefore, direct and indirect exposures of the soil compartment to this substance are highly improbable. Furthermore, the monomer substance is readily biodegradable, and by definition will not persist in the soil environment.