Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Due to hydrolytic instability of the substance, the chemical safety assessment will be based on properties of metabolites and their content of elemental lead metal, regardless of their (pH-dependent) speciation in the environment. Hence, as the assessment is based on the element concentration (i.e., Pb), physicochemical processes like phototransformation and hydrolysis are not relevant for the fate in the environment. Formation of different Pb-hydroxides may occur, but the chemical assessment will not make any differentiation among the different Pb-species (pooling of different speciation forms). This elemental-based assessment (pooling all speciation forms together) can be considered as a worst-case assumption for the chemical assessment. In general, (abiotic) degradation is an irrelevant process for inorganic substances that are assessed on an elemental basis.