Used as a catalyst in organic synthesis, particularly in esterification and condensation reactions. Employed in the production of barium-based pigments and dyes for ceramics and glass, contributing to color stability and brightness. Serves as a heat stabilizer in plastics, especially in polyvinyl chloride (PVC), to improve resistance to thermal degradation. Applied in the preparation of other barium salts used in industrial processes. Also utilized in laboratory settings for qualitative analysis of sulfate and chromate ions due to its ability to form insoluble precipitates.