Used as a precursor in the synthesis of barium-containing materials, particularly in the production of barium titanate and other barium-based ceramics used in capacitors and electronic components. Acts as a catalyst or reagent in organic synthesis, especially in reactions requiring strong basic conditions, including transesterification processes important for biodiesel production. Employed in sol-gel processes for thin film coatings due to its ability to provide uniform barium distribution. Also utilized in the preparation of specialty glasses and luminescent materials where controlled barium release is required. Commonly used in solution form for easier control and mixing in manufacturing processes.