A word used to indicate the relative level of severity of hazard and alert the reader to a potential hazard on the label. The GHS uses "Danger" and "Warning" as signal words
Ministry of Development, Industry and Foreign Trade, Definitions and Abbreviations, GHS (Globally Harmonized System of Classification and Labelling of Chemicals) Brazil, http://www.desenvolvimento.gov.br/arquivos/dwnl_11 97483901.pdf, (Globally Harmonized Sys of Class and Labl of Chem - Brit) {634}