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Environmental fate & pathways

Biodegradation in soil

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Description of key information

Waived:  Substance is readily biodegradable, and direct/indirect exposures of the soil compartment are improbable.

Key value for chemical safety assessment

Additional information

In accordance with Column 2 of REACH Annex IX, the study need not be conducted if the substance is readily biodegradable; or if direct and indiret exposure of soil 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 environment to this substance are highly improbable. The Natural Oil Monomer substance meets OECD criteria for ready biodegradability in the Manometric Respirometry test. Therefore, simulation testing of ultimate degradation in soil is not required.