Precipitated Barium Sulphate Powder

Precipitated Barium Sulphate Powder, also known as blanc fixe or barium sulfate, is a white crystalline powder with various industrial applications. Here’s a detailed product description:

Chemical Composition: Precipitated Barium Sulphate Powder is primarily composed of barium sulfate (BaSO4), a compound formed by the reaction of barium ions (Ba2+) and sulfate ions (SO4^2-) in aqueous solutions. It has a high chemical purity and is free from impurities such as heavy metals and soluble salts.

Physical Properties:

Appearance: White, odorless crystalline powder.

Particle Size Distribution: Fine and uniform particle size distribution, typically ranging from micrometer to nanometer scale.

Density: High density, typically around 4.5 g/cm³, resulting in excellent opacity and hiding power.

Mohs Hardness: Relatively low hardness, approximately 3-3.5 on the Mohs scale.

Solubility: Insoluble in water and most organic solvents, making it chemically inert and non-reactive under normal conditions.

Manufacturing Process: Precipitated Barium Sulphate Powder is produced through the precipitation of barium ions with sulfate ions in a controlled chemical reaction. It involves the reaction of barium salts (such as barium chloride or barium hydroxide) with sulfuric acid or other sulfate sources under carefully controlled conditions of temperature, pH, and agitation. The resulting precipitate is washed, dried, and ground to obtain the desired particle size and purity.

Applications:

Paints and Coatings: Precipitated Barium Sulphate Powder is widely used as a pigment extender and functional filler in paints, coatings, and inks due to its excellent opacity, brightness, and resistance to acids, alkalis, and ultraviolet (UV) radiation.

Plastics and Rubber: It serves as a reinforcing filler and anti-blocking agent in thermoplastics, thermosets, and rubber compounds, enhancing mechanical properties, dimensional stability, and surface finish.

Paper and Packaging: It improves paper opacity, printability, and surface smoothness when used as a filler in paper coatings, specialty papers, and paperboard.

Pharmaceuticals: In the pharmaceutical industry, it is utilized as a radiopaque contrast agent in X-ray imaging procedures and as a filler in tablets and capsules for controlled-release formulations.

Chemical and Industrial Applications: It finds use as a functional filler in adhesives, sealants, ceramics, friction materials, and various chemical processes requiring inertness and chemical stability.

Packaging and Handling: Precipitated Barium Sulphate Powder is typically packaged in multi-layered bags or bulk containers to protect against moisture and physical damage during storage and transportation. It should be handled with care to avoid dust generation and inhalation, and stored in a dry, well-ventilated area away from heat sources and incompatible materials.

Overall, Precipitated Barium Sulphate Powder is a versatile industrial material valued for its unique combination of properties, including high opacity, chemical inertness, and compatibility with a wide range of applications across diverse industries.