A database of over 4,000 chemical substances potentially found in plastic packaging, has been made publicly available. The Chemicals associated with Plastic Packaging (CPP) database (see CW; CRM) is the outcome of a collaboration between seven NGOs and research organisations in Europe and the US. The work has been submitted to Science of the Total Environment, and is now available, prior to peer review, as a preprint. The database is provided with the preprint as supplementary information.