Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

HEBMP-H is not biodegradable but simulation tests for biodegradation in water/sediment and biodegradation in soil are waived.

Additional information

HEBMP-xNa is not readily biodegradable, based on 12% degradation in 28d in a reliable screening study (OECD 306). HEBMP-H is not inherently biodegradable, based on 25% degradation in a Zahn-Wellens test. In the same test, toxicity controls demonstrated that HEBMP-H was not inhibitory to the inoculum.

Biodegradation in water and sediment: simulation test is waived for test item according to REACH regulation (EC n.1907/2006), annex IX, column 2 based on evaluation reported in the chemical safety assessment .

Biodegradation in soil is waived. In fact, the chemical safety assessment according to REACH Annex I indicates that it is not necessary to conduct the simulation test on ultimate degradation in soil, or to identify degradation products. Simulation tests (soil) are not considered necessary because the risk characterisation ratios (RCRs) for the terrestrial compartment, even with the realistic assumption that the parent substance is not biodegradable, are <1.