Used in the production of heat treatment salts for metals, where it helps in achieving uniform heating and prevents oxidation during hardening and tempering processes. Employed in the manufacturing of barium-based chemicals and pigments for ceramics and glass, contributing to improved density and refractive properties. Serves as a source of barium in analytical chemistry, particularly in gravimetric analysis for sulfate determination due to the formation of highly insoluble barium sulfate. Applied in water treatment processes to remove sulfate ions in specific industrial wastewater systems. Also utilized in the formulation of certain electroplating baths to enhance conductivity and deposit quality. Its use is limited in consumer products due to toxicity concerns, but remains valuable in controlled industrial and laboratory settings.