Application
Precipitated Barium Sulfate | The "All-Round Filler" in Industry
Among various industrial sectors such as coatings, plastics, inks and ceramics, there is a low-profile yet critical basic raw material — precipitated barium sulfate.
With its excellent physical and chemical properties, it has become a core filler for improving product performance, reducing costs and optimizing texture. Today, let’s take an in-depth look at this "powerhouse" raw material in the industrial field.
1. What is Precipitated Barium Sulfate?
Precipitated barium sulfate (chemical formula: BaSO₄) is a white powder synthesized through a precise precipitation process using high-purity barium salt solution and sulfuric acid.
Our precipitated barium sulfate is free of impurities such as quartz, featuring higher purity and more stable performance. It avoids product defects caused by impurities from the source, making it suitable for high-end industrial production requirements.
2. Core Properties, Unlocking Multiple Advantages
As a high-quality industrial filler, the core competitiveness of precipitated barium sulfate lies in these outstanding properties:
✅ High Whiteness + High Brightness
Pure white powder with uniform color, which significantly improves the gloss and visual texture of products, ideal for coatings and inks with high appearance requirements.
✅ Ultra-Fine Particle Size + Low Residue on Sieve
Fine and uniform particles with excellent dispersibility, not easy to agglomerate, and can be perfectly blended with various substrates.
✅ Moderate Oil Absorption
Balances substrate wettability and processing fluidity, compatible with different formulation systems.
✅ Aging Resistance + Low Abrasion
Chemically stable, acid and alkali resistant, with strong weather resistance; not prone to yellowing or cracking after long-term use. Low abrasiveness reduces equipment wear and extends service life of production lines.
✅ High Refractive Index
Refractive index of 1.64, which enhances product hiding power and reduces the usage of high-cost raw materials, maximizing cost performance.
✅ Low Water Solubles + High Purity
Extremely low impurity content, no precipitation of harmful substances, safe and environmentally friendly, in line with industrial environmental protection standards.
3. Core Technical Indicators
All product indicators are strictly controlled, with transparent and traceable data, stably meeting the requirements of industrial mass production.
| Item | Specification |
|---|---|
| BaSO₄ Content | 98 % |
| Brightness | 98 % |
| Iron Content | 0.003 % |
| Average Particle Size D90 | 3.0 μm |
| Average Particle Size D50 | 1.0 μm |
| Moisture | 0.3 % |
| Oil Absorption | 10–20 g/100 g |
| Refractive Index | 1.64 |
| pH Value | 6.5–9.0 |
4. Versatile Applications, An Indispensable Industrial Filler
With its all-round performance, precipitated barium sulfate is widely used in many industries as an essential core raw material.
1. Coatings Industry
Suitable for powder coatings and industrial coatings, improving hardness, wear resistance and weather resistance, enhancing film gloss and hiding power, while reducing production costs.
2. Plastics Industry
Used in various plastic products to improve rigidity and dimensional stability, enhance surface finish, reduce shrinkage and deformation, compatible with injection molding, extrusion and other processing technologies.
3. Inks Industry
Improves fineness, dispersibility and gloss of inks, ensuring full colors and high definition of printed patterns, suitable for offset printing, gravure printing and other ink systems.
4. Ceramics / Adhesives / Sealants
Increases whiteness and compactness of ceramic bodies; enhances bonding strength and aging resistance in adhesives and sealants, extending product service life.
5. Other Fields
Also applied in special materials such as photographic paper, meeting niche high-end scenarios with its stable performance.
