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Sediment toxicity

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Description of key information

As PMDI is a reactant with water, access of water to PMDI and vice versa is strictly controlled. Furthermore, PMDI polymerizes in the presence of water and thus exposure of PMDI to sediment is highly likely to be negligible. Therefore, a PNEC sediment cannot be determined experimentally for PMDI.

Key value for chemical safety assessment

Additional information

No sediment toxicity data is available for the test substance. Annex X states that this study need not be conducted if the chemical safety assessment does not indicate a need to further investigate the effects on sediment organisms (column 2).