Barium carbonate (CAS 513-77-9)

Barium carbonate, represented by the chemical formula BaCO3, is an inorganic compound appearing as a white powder or granular substance. This chemical is primarily sourced from the mineral witherite and is notable for its utility in the ceramics industry as a key ingredient in the formulation of ceramic glazes. It acts by introducing barium into the glaze, which helps to increase its luster and durability. Beyond its industrial applications, barium carbonate is extensively used in the removal of sulfates in chemical processes due to its ability to precipitate sulfate ions as barium sulfate, which is highly insoluble. This property is particularly valuable in the purification of brine solutions in chlorine-alkali plants. In research, barium carbonate has been employed as a precursor material in the synthesis of other barium compounds, such as barium titanate (BaTiO3), by reacting with titanium-bearing materials under high-temperature conditions. This reaction is crucial for producing materials that exhibit piezoelectric properties, applicable in sensors and actuators. Additionally, barium carbonate is studied for its potential in carbon capture technologies. Its ability to react with sulfur dioxide, forming barium sulfate and carbon dioxide, is explored for filtering and controlling emissions from industrial processes. The compound′s diverse applications and reactions make it a subject of interest in both environmental science and material chemistry studies, albeit its toxic nature necessitates careful handling and strict regulatory compliance in its use.