Registration Dossier

Environmental fate & pathways

Biodegradation in soil

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Description of key information

Waived:  testing not justified due to exposure considerations

Key value for chemical safety assessment

Additional information

In accordance with column 2 of REACH Annex IX, degradation simulation testing in soil does not need to be conducted: The substance is used exclusively in manufacture of polymers/elastomers, where it is completely reacted into these products; and as a result will have no direct or indirect exposures to the soil environment.Wastewater exposures to the substance occurs only with industrial sewage treatment works associated with the manufacture site. According to EU regulations, wastewater biosolids from the industrial STP are not applied to soil.The biodegradation of this UVCB with representative polyols is predicted by OASIS (IUCLIDsection5.6). Predicted metabolites have Log Kow values similar or less than their corresponding parent compounds. Since the ecotoxicity and bioaccumulation potential of these polyols and their metabolites correlate with their Log Kow, the metabolites are not expected to be more toxic or more bioaccumulative than their parent compounds. Additional tests are not required for ecological risk assessment, or PBT assessment, of the UVCB substance and its associated components and degradation products.