The toxicological data matrix provides a framework for the derived results of the targeted literature study that was carried out in project ALTERNATIVE. Included are 3 tables. Table 1 (1st sheet) provides an overview of the included toxicants, as well as physicochemical properties and the total number of results for every toxicant. In table 2 (2nd sheet), a list of all potency estimates can be found (318 in total). Table 3 (3rd tab) provides the summarized main findings of included cardiotoxicity studies.