Development of ChemExpo Knowledgebase
Evaluation of chemical risk requires understanding of both the hazard presented by a chemical, via toxicity, irritation, or other harmful effects, and how much or how often the organism of interest is exposed to the chemical. ChemExpo is a publicly accessible data search and visualization tool for exploring chemical data relevant to exposure assessment that have been curated from public documents. It provides data collected by EPA about how chemicals are used in commerce and how they occur in consumer and industrial products. The ChemExpo team actively works to curate these data to harmonize consumer and occupational product categories, chemical functional categories, and exposure-relevant keywords, as well as to substance identifiers (DTXSIDs) used by EPA and the CompTox Chemicals Dashboard. These curated data are collectively known as EPA's Chemicals and Products Database (CPDat).
The beta version of ChemExpo was released in September of 2023. The beta release allows users to explore, search, and download CPDat data, aligning with bulk releases to enhance accessibility and integration with the CompTox Chemicals Dashboard.