The foundation of chemical safety testing relies on chemistry information such as high-quality chemical structures and physicochemical properties. This information is used by scientists to predict the potential health risks of chemicals.The CompTox Dashboard is part of a suite of dashboards developed by EPA to help evaluate the safety of chemicals. It provides access to a variety of data and information on over 700,000 chemicals currently in use and of interest to environmental researchers. Within the CompTox Dashboard, users can access chemical structures, experimental and predicted physicochemical and toxicity data, and additional links to relevant websites and applications. It maps curated physicochemical property data associated with chemical substances to their corresponding chemical structures.