Used in the preparation of other barium compounds and as a source of barium in chemical synthesis. Serves as a precursor in the production of phosphors and scintillation materials, which are important in radiation detection equipment. Also utilized in some specialized analytical chemistry procedures due to its ability to precipitate sulfate ions. Its high density makes it suitable for certain applications in optical glass and lens manufacturing. Additionally, it finds use in research settings for crystal growth studies and luminescent materials development.