The total number of preliminary ENMs for the SbD4Nano project is around 10. As each ENM is surface modified, an ERM identifier number will also be assigned for the new materials. The registered identifiers for the preliminary ENMs are labeled with batch number, date, chemical composition, supplier name, and code using eNanoMapper (search.data.enanomapper.net/projects/sbd4nano/). Within the project, toxicological profiles of ENMs are investigated in vitro. The eNanoMapper database is also used for toxicological data management for the modified ENMs. This information is made available to other project partners through e-mail, databases, and as Markdown files. The properties of ENMs such as substance identification, substance and physicochemical characterization, matrix information, end-product information, sector applications, and process of synthesis from the supply chain participants, were registered on the shared project drive. Data generated by project partners is being entered using NanoSafety cluster Excel templates, with an integrated Materials datasheet, allowing easy ERM lookup during data entry, as described for the RiskGONE project database. While the data templates are shared between projects, the TemplateWizard populates the Materials datasheet with project-specific material identifiers.