Barium Sulfate

Nano Precipitated Barium Sulfate (NPBS) – Premium Filler for High-End Coatings & Functional Materials

Product Name: Barium Sulfate

Product Details:

1.Chemical Formula: BaSO₄

2.Appearance: White powder

3.Purity: 98%

4.Specification: Nanometer precipitated barium sulfate

5.Features:

Small particle size, low scattering, high transparency—ideal for transparent or high-gloss products.
Excellent dispersion and high activity, compatible with various resins, preventing flocculation and floating.
High L° value, delivering ultra-high gloss and vivid color to product surfaces.
Low impurities, free of harmful substances, ensuring safety and surface cleanliness.
Highly inert—resistant to acids, alkalis, high temperatures, UV, and weathering.
Low oil absorption, superior leveling performance.
Uniform particle size, maintaining mechanical properties—narrow distribution, low surface area, and reduced base material usage.
High thermal conductivity and rheology, shortening plasticizing and molding cycles.

6.Applications:

Automotive/wood coatings, interior/exterior paints, anti-corrosion coatings, powder coatings, etc.
High-gloss plastics, engineering plastics, rubber, and plastic products (e.g., ABS, PE, PP, elastomers, biodegradable plastics).
PCB inks, printing inks, and related industries.

7.Shelf life: 1 year

8.Packaging: 25/50kg bags, supporting ton bags.

9.Storage: Store in a cool, dry place protected from moisture and light.

Product parameters

ITEM		INDEX
ITEM		Superior Grade	First Grade	Qualified Grade
Barium sulfate (BaSO₄)(in a dry basis) ɯ/%	≥	98.0	97.0	95.0
Volatiles at 105 ° C ɯ/%	≤	0.20	0.25	0.30
Aqueous solution ɯ/%	≤	0.30	0.30	0.50
Iron (Fe) ɯ/%	≤	0.003	0.005	/
Whiteness	≥	94.0	93.0	89.0
Oil absorption /(g/100g)		10~30	10~30	/
pH(10% suspension)		6.5~9.0	5.5~9.5	5.5~9.5
Fineness (45 μm test sieve residue)/%	≤	0.1	0.25	0.5
Sulfide(in S)	≤	0.003	0.005	/
Median particle size (D₅₀)/µm	≤	2.0	/	/