Hexafluorophosphoric acid is a compound that is commonly used in the chemical industry as a strong acid. It is also known as hydrogen hexafluorophosphate or hexafluorophosphoric acid solution. Synonyms for this compound include phosphoric acid, hexafluoro-, spectrofluor, durafluric acid, and fluoridophosphoric acid. These synonyms are often used interchangeably in various chemical reactions to denote the same compound. The use of a synonym can be particularly helpful when different chemists are working on the same project or when searching for literature references. Regardless of the name used, it is important to handle this strong acid with care due to its potential hazards.