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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Water:

In accordance with Regulation (EC) No 1907/2006, Annex IX, Section 9.2 and 9.2.1.2, Column 2, the simulation test on ultimate degradation in surface water does not need to be conducted as the chemical safety assessment according to Annex I indicates that there is no need to investigate further the degradation of the substance and its degradation products. The risk characterization ratios (RCRs) of the chemical safety assessment are below 1, indicating that the risks are acceptable. In addition, for the substance (MIPDA, CAS 93940-97-7) only industrial uses with adequate risk mitigating measures are foreseen. Environmental exposure through widespread uses by professionals and consumers is excluded. Therefore, no biodegradation studies in surface water will be provided.

Sediment:

In accordance with Regulation (EC) No 1907/2006, Annex IX, Section 9.2 and 9.2.1.4, Column 2, the simulation test on ultimate degradation in sediment does not need to be conducted as the chemical safety assessment according to Annex I indicates that there is no need to investigate further the degradation of the substance and its degradation products. The risk characterization ratios (RCRs) of the chemical safety assessment are below 1, indicating that the risks are acceptable. For the substance (MIPDA, CAS 93940-97-7) only industrial uses with adequate risk mitigating measures are foreseen. In addition, environmental exposure through widespread uses by professionals and consumers is excluded.  Further, the substance does not have the potential to bioaccumulate nor is it considered as a PBT/vPvB substance. In addition, the risk assessment results in Risk Characterization Ratios below 1. Hence, sediment is not expected to be a compartment of concern. Therefore, no biodegradation studies in sediment will be provided.