BARIUM CARBONATE | CAS 513-77-9

Product Overview

Barium Carbonate (CAS: 513-77-9) is an inorganic compound with the chemical formula BaCO₃. It appears as a white, odorless, heavy crystalline powder that is practically insoluble in water but readily dissolves in acids, including hydrochloric acid and nitric acid, with the release of carbon dioxide. Barium carbonate is a versatile industrial chemical widely used in the manufacture of ceramics, glass, electronic components, and as a precursor for other barium compounds.

Product Description

Barium carbonate is a white, dense powder with a specific gravity of approximately 4.3 g/cm³. It is insoluble in water and most organic solvents, but dissolves in dilute mineral acids (hydrochloric, nitric, or acetic acid) with effervescence due to carbon dioxide formation. The compound is thermally stable up to about 800°C, above which it decomposes into barium oxide and carbon dioxide.

Barium carbonate is produced by the precipitation reaction of barium sulfide or barium chloride with sodium carbonate or by carbonation of barium hydroxide. It is available in several grades, including industrial grade (96% – 99%), high-purity grade (99.5%+), and electronic grade for specialized applications.

Technical Specifications

Applications

Ceramics & Tile Manufacturing

Barium carbonate is a key raw material in the ceramic industry. It serves as a fluxing agent in glazes and bodies, improving the brightness, durability, and chemical resistance of finished products. It is particularly effective in reducing the melting temperature of silica and enhancing the mechanical strength of ceramic tiles, sanitaryware, and tableware. It is also used to precipitate soluble sulfates in clay bodies, preventing efflorescence (scum formation) on the surface of fired ceramics.

Glass Production

In the glass industry, barium carbonate is added to glass batches to increase the refractive index and density of the glass. It is essential for producing high-quality optical glass, television screen glass, and lead-free crystal glass. The barium ion imparts greater brilliance and clarity while also improving the glass's resistance to chemical attack.

Electronic & Electrical Components

High-purity barium carbonate is used in the production of electronic ceramics, including thermistors, varistors, capacitors, and ferrite materials. It is a critical precursor for manufacturing barium titanate (BaTiO₃) and other barium-based electroceramics used in multilayer ceramic capacitors, piezoelectric devices, and sensors.

Barium Compound Production

Barium carbonate serves as the primary raw material for synthesizing other barium salts and compounds, such as barium chloride, barium nitrate, barium hydroxide, and barium oxide. It is also used in the production of magnetic materials and as a flux in the manufacture of specialized alloys.

Other Applications

• Pigments & Paints: Used as an extender and filler for corrosion-resistant coatings.

• Plastics & Rubber: Acts as a filler and stabilizer.

• Explosives & Pyrotechnics: Imparts a green color to flames.

• Glass frit manufacturing

• Water treatment (removal of sulfates by precipitation)

• Oil drilling fluids (as a weighting agent additive)

• Paper coating and as a whitening agent

• Solder paste (in electronics manufacturing)

Key Benefits

• High purity grades available for demanding electronic and optical applications

• Effectively prevents efflorescence in ceramic bodies by removing soluble sulfates

• Increases refractive index and density in glass products

• Essential precursor for barium titanate and other functional electronic ceramics

• Chemically stable and easy to handle under dry conditions

• Cost-effective raw material for multiple industrial sectors

• Customizable particle size distribution to meet specific process requirements

• Excellent fluxing properties in glaze and glass formulations

Packaging Options

Packaging Details:

• Inner liner: Polyethylene (PE) film to protect from moisture

• Outer layer: Plastic woven or paper laminated bags, firmly stitched or heat-sealed

Storage Recommendations:

• Keep in dry, well-ventilated area

• Avoid exposure to moisture and acids

• Stack palletized bags on dry floors

•