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Precipitated Barium Sulfate
Product Introduction
Precipitated Barium Sulfate, with CAS No. 7727-43-7 and molecular formula BaSO₄, is a high-purity inorganic functional filler produced through controlled chemical precipitation and advanced post-treatment processes. Unlike natural ground barium sulfate made from barite ore, our precipitated grade features extremely low heavy metal content, narrow particle size distribution and excellent surface modification performance,.
This white, odorless, non-toxic powder shows outstanding chemical inertness, high density and exceptional optical properties. It can significantly improve the surface gloss, weather resistance, radiation shielding and mechanical performance of downstream products.
Technical Specifications
Test Item | Unit | Index |
Appearance | - | White Powder |
BaSO₄ Purity | % | ≥ 98.0 |
Whiteness | % | ≥ 92.0 |
Moisture Content | % | ≤ 0.3 |
pH Value (10% Suspension) | - | 6.0 – 8.0 |
Oil Absorption Value | g/100g | 10 – 30 |
D97 Particle Size | μm | ≤ 10.0 |
45μm Sieve Residue | % | ≤ 0.05 |
Specific Gravity | g/cm³ | ≥ 4.2 |
Mohs Hardness | - | 3.0 – 3.5 |
Refractive Index | - | 1.64 |
Loss on Ignition | % | ≤ 0.5 |
Water Soluble Matter | % | ≤ 0.2 |
Iron Content (Fe) | % | ≤ 0.004 |
Heavy Metal Content (Pb) | mg/kg | ≤ 10 |
Radiation Shielding Grade | - | Optional |
Product Advantages
1.Ultra-High Gloss Performance: Uniform fine particle size and stable refractive index bring excellent mirror gloss effect, making it ideal for high-gloss topcoat, ink and cosmetic packaging plastic products
2.Exceptional Weather Resistance: Strong UV resistance and chemical inertness, no discoloration or powdering even in long-term outdoor exposure, significantly extending the service life of coating films
3.Excellent Radiation Shielding: High barium sulfate content effectively blocks X-ray and gamma-ray penetration, widely recognized in medical radiation protection and industrial anti-radiation scenarios
4.Outstanding Dimensional Stability: Low thermal expansion coefficient, effectively reduces the shrinkage and deformation of plastic parts, improving the dimensional accuracy of precision injection molded products
5.Super Dispersion Performance: Strictly controlled particle morphology avoids agglomeration, ensuring smooth extrusion and uniform texture in masterbatch, engineering plastic and film production
Application Scenarios
1.High-Grade Coatings & Paints: Widely used in automotive topcoats, architectural high-gloss coatings, industrial anti-corrosion coatings, marine coatings and powder coatings to enhance gloss, weather resistance and sag resistance
2.Ink Industry: Applied in offset inks, solvent-based inks, water-based inks and high-gloss printing inks to improve ink transparency, hiding power and printing smoothness
3.Plastic & Masterbatch Industry: Used in PVC profiles, films, engineering plastics, color masterbatch and cosmetic packaging materials to improve surface gloss, dimensional stability and filling performance
4.Rubber & Sealing Products: Serves as high-performance filler in rubber parts, sealing strips and cable materials to improve rubber density, wear resistance and chemical corrosion resistance
5.Battery & Industrial Chemicals: Applied in lead-acid battery plates, lithium battery separators and industrial chemical raw materials to enhance product stability and mechanical strength
6.Radiation Protection Field: Special high-density grade for CT rooms, X-ray rooms, nuclear protection engineering and medical radiation shielding materials
Package,storage and shelf life
Standard export package: 25kg/bags,20ft FCL loading capacity: 25–27 MT,
Storage:Store in a dry, cool and well-ventilated indoor warehouse, strictly avoid moisture and rain to prevent powder agglomeration from affecting dispersion performance
Shelf life:24 months from the production date