Barium Sulfate Powder (BaSO₄), Fine Mineral Filler for Resin, Paint, Casting & Industrial Applications
Resin, paint, and casting formulations often need more than just color. Barium Sulfate (BaSO₄) is a fine white mineral powder used as a filler, weighting agent, and pigment extender to improve the appearance, density, and performance of many art, craft, and industrial products. It blends easily into resins, paints, coatings, and casting compounds while remaining chemically stable and non-reactive.
Why Use Barium Sulfate? Barium sulfate is valued because it offers excellent whiteness, high density, and good chemical resistance without affecting the curing of most resin and coating systems. It is also commonly used to extend expensive white pigments such as titanium dioxide while maintaining a smooth finish.
Common Uses:
- Epoxy resin and polyurethane resin fillers
- Artificial stone, marble, and terrazzo effects
- Acrylic paints and water-based craft paints
- Gypsum, eco-resin, and casting powder formulations
- Silicone rubber compounds
- Polymer clay and air-dry clay formulations
- Industrial coatings and primers
- Plastics, rubber, and adhesive formulations
Benefits:
- High-purity white mineral filler
- Increases weight and density of finished products
- Produces smoother surfaces and improved finish
- Helps create realistic stone and ceramic effects
- Extends titanium dioxide and other pigments
- Chemically inert and stable
- Low oil absorption for easier formulation
- Suitable for many water-based and solvent-based systems
Technical Information
Chemical Name: Barium Sulfate
Chemical Formula: BaSO₄
CAS Number: 7727-43-7
Appearance: Fine white powder
Odour: Odourless
Solubility: Insoluble in water
Density: Approximately 4.5 g/cm³
Typical Applications: For resin projects, barium sulfate can be mixed into epoxy or polyurethane systems to increase weight, improve opacity, and create decorative stone like finishes. In paint manufacturing, it functions as a filler and pigment extender that helps improve film consistency while reducing formulation costs. It is also widely used in gypsum, casting powders, silicone compounds, plastics, rubber, and various industrial coatings.
Package Contents: 1 × Barium Sulfate Powder 250g
Barium sulfate is a practical mineral additive for experiments, artists, and commercial manufacturers. Whether you're producing resin crafts, developing coatings, or formulating casting materials, it provides an easy way to improve density, finish, and overall product performance.
