Precipitated Barium Sulphate
The refractive index of this product is 1.64, same as most of the synthetic resin.and the particle size is nano grade, good transmittance of visible light during390-780 nm, the optical property is very good.
With special surface coated technology, low oil absorption, good distribution,good affinity with many kinds of resin, make the final product good mechanicalproperty, improve the filling rate, reduce the final cost.
High L value, could guarantee the final product high glossy and good brightness.
Without halogen, could guarantee the final product safety and cleanliness.
Synthesis Process：
Produce the nano barium sulfate with carbonate solution and sulfuric acid andcoated with special technology.
Application Areas：
Transparent filler masterbatch Car Paints
Index | TLZ-PBS302 |
BaSO₄ Content min% | 98% min |
Moisture max % | 0.15 |
Water Soluble max % | 0.15 |
lron Content | 5 ppm |
Whiteness % | 97 min |
Brightness (L Value ) | 98-99% |
Oil Absorption | 10-20 g/cm³ |
PH | 6.5-9.0 |
Particle Size D50 | 0.3 μm |
Residue (45 μm) | 0.02% max |
Conductivity | 150 μs/cm |
Looking for a filler that delivers unbeatable whiteness, chemical stability, and consistent particle size?
Precipitated barium sulphate is the industry’s go-to solution across paints, plastics, rubbers, coatings, and adhesives—where performance and appearance can’t be compromised.
Thanks to its chemical synthesis process, this highly refined precipitated barium sulphate offers superior properties over natural grades, making it ideal for applications that demand low oil absorption, high brightness, and excellent dispersion.
🔬 What is Precipitated Barium Sulphate?
Precipitated barium sulphate is an inorganic white powder (BaSO₄) formed through a controlled chemical reaction between barium salts and sulphate sources. This method yields particles with:
Consistent size distribution
High chemical purity (≥98%)
Extremely low solubility
Exceptional whiteness
Unlike natural barytes, precipitated barium sulphate is free of impurities like iron or silica, making it ideal for optical and high-tech industrial uses.
🧪 Technical Specifications
| Parameter | Typical Value |
|---|---|
| Chemical Formula | BaSO₄ |
| Purity (BaSO₄ Content) | ≥ 98% |
| Appearance | Bright white powder |
| Particle Size (D50) | ~1.0 – 1.5 µm |
| Whiteness (ISO) | ≥ 96 |
| Oil Absorption (g/100g) | ≤ 12 |
| Moisture Content | ≤ 0.2% |
| pH Value (10% solution) | 6.5 – 8.5 |
| Solubility in Water | < 0.001 g/100 mL |
🎯 Why Use Precipitated Barium Sulphate?
✔️ Superior Optical Brightness
With ultra-high whiteness, precipitated barium sulphate enhances the visual aesthetics of paints, plastics, and paper without yellowing or color shift.
✔️ Excellent Dispersion
Its ultrafine, uniform particle structure ensures smooth dispersion in both water- and solvent-based systems.
✔️ Inert & Stable
It’s chemically inert, resistant to acids, alkalis, UV rays, and heat—making it perfect for long-term outdoor or industrial use.
✔️ Cost-effective Extender
Ideal for replacing more expensive white pigments like titanium dioxide (TiO₂) without sacrificing opacity or durability.
🖌️ Applications of Precipitated Barium Sulphate
🎨 Paints & Coatings
Acts as a functional filler for automotive, architectural, and powder coatings
Improves UV resistance, film durability, and surface gloss
🧴 Plastics & Masterbatch
Adds bulk without affecting color
Improves flowability, mechanical strength, and stiffness
🧪 Rubber & Elastomers
Enhances tear strength and abrasion resistance
Maintains flexibility while boosting density
📄 Paper & Printing Inks
Increases opacity, smoothness, and brightness
Perfect for high-quality coated paper or fine ink formulations
🧑🔬 Real Customer Reviews
⭐⭐⭐⭐⭐
“Our formulation team switched to precipitated barium sulphate for our premium coatings, and the difference was immediate—higher gloss, better flow, and no more yellowing.”
— Diane L., Head of R&D, Industrial Paint Manufacturer
⭐⭐⭐⭐☆
“In plastic masterbatch production, this filler blends seamlessly without affecting pigment dispersion. The consistency between batches is spot on.”
— Marco T., Operations Manager, Polymer Solutions Ltd.
⭐⭐⭐⭐⭐
“We used to rely solely on TiO₂, but adding precipitated barium sulphate as a partial extender cut costs by 20%—with no impact on color strength.”
— Akash B., Procurement Lead, PVC Profiles Manufacturer
📦 Packaging & Delivery
Standard Packing: 25kg moisture-proof bags
Bulk Options: 500kg–1000kg jumbo bags available
Custom Packaging: Optional with OEM labeling
Lead Time: 7–10 days for bulk orders
Sample: Free 500g sample with COA on request
🌍 Global Compliance
Our precipitated barium sulphate complies with:
RoHS & REACH regulations
ISO9001:2015 certified production
Optional FDA/Food Grade versions
❓ FAQ Section
Q1: Can precipitated barium sulphate be used with TiO₂?
A: Yes, it’s often used to extend TiO₂ in paints or plastics to reduce cost and enhance performance.
Q2: Is it safe for food contact or medical uses?
A: We offer food-grade variants with specific surface treatment and documentation for such uses.
Q3: What’s the difference between natural and precipitated barium sulphate?
A: Precipitated grades have finer particle size, higher purity, and no quartz contamination, making them ideal for technical-grade products.
