This dataset contains the raw data of the chemical analysis described in the associated publication, namely the mass spectral data of the plastic extracts analyzed using UPLC-QTOF-DDA. For experimental details on the nontarget analysis, see the Supporting Information of the publication. The data uploaded here are in the Waters .raw file format that can be accessed using Waters software (MassLynx, Progenesis etc.) and the raw files converted to the open mzML format using msConvert in ProteoWizard (http://proteowizard.sourceforge.net). Each file contains the individual mass spectral data of a sample. They are labelled with the sample name corresponding to the samples described in Table 1 of the publication. The sample names denote the polymer type of the plastic product. PB refers to the procedural blanks.