Cerium Dioxide NM-211, NM-212, NM-213, characterisation and test item preparation : JRC repository: NM-series of representative manufactured nanomaterials

In 2011 the JRC launched a repository for Representative Nanomaterials to support both EU and international research projects, and especially the OECD Working Party on Manufactured Nanomaterials that leads an exploratory programme "Testing a Representative set of Manufactured Nanomaterials", aiming to generate and collect data on characterisation and (eco)toxicological properties to understand relevant end-points as well as the applicability of OECD Test Guidelines for testing nanomaterials. The Repository responds to a need for nanosafety research purposes: availability of nanomaterial from a single production batch to enhance the comparability of results between different research laboratories and projects. The present report presents the physico-chemical characterisation of the manufactured nano cerium dioxide, NM-211 and NM- 212 from the JRC repository, both originating from a single batch of commercially manufactured material. In addition data on a bulk (i.e. macro-sized) CeO2, NM-213, is included, which also originates from a single batch; NM-213 is not in the JRC repository. The studies were performed in close collaboration between the PROSPEcT project, where the partners are the Fraunhofer Institute for Molecular and Applied Ecology (Fh-IME, Germany), LGC standards (United Kingdom), the National Research Centre for the Working Environment (NRCWE, Denmark), Commonwealth Scientific and Industrial Research Organisation (CSIRO, Australia) and the National Measurement Institute of Australia. In addition, the JRC contributed study results to the characterisation of the materials.