BARIUM SULFATE

Barium Sulfate is an inorganic chemical compound used widely as a high-density filler, pigment extender, and radiopaque agent in coatings, plastics, rubber, medical imaging, and drilling fluids.
Barium Sulfate provides exceptional chemical inertness, high brightness, and low oil absorption, making it valuable in high-performance formulations requiring stability, whiteness, and controlled particle size.
Barium Sulfate exhibits excellent resistance to acids, alkalis, and solvents, enabling its use in harsh industrial environments.
Barium Sulfate delivers opacity, UV stability, and gloss control while improving mechanical strength in polymer and coating systems.

CAS Number: 7727-43-7
EC Number: 231-784-4
Molecular Formula: BaSO₄
Molecular Weight: 233.39 g/mol

Synonyms: Barium Sulfate, Barite, Blanc Fixe, Artificial Barium Sulfate, BaSO₄, Precipitated Barium Sulfate, Natural Barium Sulfate, Barium Sulphate, Barium Sulfate, BaSO₄, Barium Sulphate, Sulfuric Acid Barium Salt, Barium(II) Sulfate, Natural Barium Sulfate, Synthetic Barium Sulfate, Precipitated Barium Sulfate, High-Purity Barium Sulfate, Extra-Pure Barium Sulfate, Technical Grade Barium Sulfate, Industrial Grade Barium Sulfate, Pharmaceutical Grade Barium Sulfate, Cosmetic Grade Barium Sulfate, Food Grade Barium Sulfate, Barium Sulfate Powder, Barium Sulfate Micronized, Ultra-Fine Barium Sulfate, Precipitated BaSO₄, Ground Barium Sulfate, Blanc Fixe, Blanc-Fixe, Blanc Fixe N, Blanc Fixe HD, Synthetic Blanc Fixe, Natural Blanc Fixe, Barite, Baryte, Barytes, Heavy Spar, Heavy-Spar Barium Sulfate, Barite Mineral Barium Sulfate, Baryte Mineral BaSO₄, Barium Sulfate Filler, Barium Sulfate Extender, Barium Sulfate Pigment, Barium Sulfate White Pigment, Barium Sulfate Coating Grade, Barium Sulfate Plastics Grade, Barium Sulfate Rubber Grade, Barium Sulfate Paint Grade, Barium Sulfate Adhesive Grade, Barium Sulfate Masterbatch Grade, Barium Sulfate Functional Filler, Barium Sulfate Industrial Filler, Barium Sulfate Polymer Additive, Barium Sulfate Reinforcing Filler, Barium Sulfate Density Modifier, Barium Sulfate Radiation Shielding Grade, Barium Sulfate Medical Grade, Barium Sulfate Imaging Grade, Barium Sulfate X-ray Grade, Barium Sulfate Radiopaque Agent, BaSO₄ Radiographic Agent, Barium Sulfate Diagnostic Grade, Barium Sulfate Drilling Grade

APPLICATIONS

Barium Sulfate is used in thermoset resin systems.
Barium Sulfate enhances dimensional accuracy in epoxy composites.
Barium Sulfate improves impact resistance in unsaturated polyester resins.

Barium Sulfate is used in 3D printing materials.
Barium Sulfate increases density in photopolymer formulations.
Barium Sulfate improves print resolution in additive manufacturing.

Barium Sulfate is used in battery separator coatings.
Barium Sulfate improves thermal stability in lithium-ion cell components.
Barium Sulfate enhances mechanical strength of separator films.

Barium Sulfate is used in acoustical panels.
Barium Sulfate boosts sound-damping performance in architectural materials.
Barium Sulfate increases mass for improved noise reduction.

Barium Sulfate is used in anti-corrosive primer coatings.
Barium Sulfate improves moisture resistance in metal primers.
Barium Sulfate reduces permeability to corrosive agents.

Barium Sulfate is used in foundry molds.
Barium Sulfate helps control mold density in metal casting.
Barium Sulfate improves thermal stability of foundry sand blends.

Barium Sulfate is used in friction materials.
Barium Sulfate enhances heat resistance in brake pads.
Barium Sulfate stabilizes friction coefficients under high load.

Barium Sulfate is used in fire-resistant composite panels.
Barium Sulfate increases char residue in flame-retardant systems.
Barium Sulfate enhances smoke suppression in composite structures.

Barium Sulfate is used in flexographic inks.
Barium Sulfate improves ink transfer in high-speed printing.
Barium Sulfate enhances gloss uniformity in flexible packaging applications.

Barium Sulfate is used in pharmaceutical tablet formulations.
Barium Sulfate functions as an inert filler in solid dosage forms.
Barium Sulfate contributes to controlled density in specialty tablets.

Barium Sulfate is used in ceramics production.
Barium Sulfate increases density and brightness in ceramic glazes.
Barium Sulfate enhances glaze smoothness and opacity.

Barium Sulfate is used in synthetic marble.
Barium Sulfate adds density and visual depth to cultured stone products.
Barium Sulfate improves hardness and polishability.

Barium Sulfate is used in cable compounds.
Barium Sulfate improves flame resistance in wire and cable insulation.
Barium Sulfate enhances dielectric strength in PVC compounds.

Barium Sulfate is used in specialty marine coatings.
Barium Sulfate helps resist saltwater abrasion in ocean-exposed structures.
Barium Sulfate provides long-term gloss stability in harsh marine environments.

Barium Sulfate is used in sports flooring systems.
Barium Sulfate increases surface hardness in polyurethane sports floors.
Barium Sulfate improves wear resistance under repetitive impact.

Barium Sulfate is used in coatings as a high-brightness extender.
Barium Sulfate improves opacity and weather resistance in architectural paints.
Barium Sulfate enhances durability in industrial coatings.

Barium Sulfate is incorporated into plastics.
Barium Sulfate increases dimensional stability and stiffness in PP, PE, and PVC.
Barium Sulfate reduces shrinkage and improves heat resistance.

Barium Sulfate is used in rubber compounds.
Barium Sulfate improves tensile strength and aging resistance.
Barium Sulfate provides high-density formulations for specialized applications.

Barium Sulfate is applied in medical imaging as a radiopaque agent.
Barium Sulfate is used in X-ray contrast media for gastrointestinal diagnosis.
Barium Sulfate provides safe, insoluble visibility under radiographic imaging.

Barium Sulfate is used in oil and gas drilling fluids.
Barium Sulfate adds density for effective hydrostatic pressure control.
Barium Sulfate stabilizes boreholes in drilling operations.

Barium Sulfate is incorporated into powder coatings.
Barium Sulfate enhances smoothness and gloss control.
Barium Sulfate resists yellowing under UV light.

Barium Sulfate is used in printing inks and pigments.
Barium Sulfate provides whiteness, dispersion, and stability.
Barium Sulfate improves print quality and wear resistance.

Barium Sulfate is used in battery and friction materials.
Barium Sulfate increases density and mechanical strength.
Barium Sulfate improves thermal resistance in brake pads.

Barium Sulfate is used as a filler in plastics.
Barium Sulfate improves dimensional stability in polypropylene compounds.
Barium Sulfate enhances stiffness and impact strength in engineering plastics.

Barium Sulfate is used in PVC formulations.
Barium Sulfate provides high density in rigid PVC products.
Barium Sulfate improves weathering resistance in exterior PVC profiles.

Barium Sulfate is used in automotive plastics.
Barium Sulfate enhances surface gloss in automotive interior components.
Barium Sulfate provides scratch resistance in molded parts.

Barium Sulfate is used in powder coatings.
Barium Sulfate provides excellent dispersibility in thermoset coatings.
Barium Sulfate enhances durability and chemical resistance in coating films.

Barium Sulfate is used in industrial paints.
Barium Sulfate improves hiding power in high-performance coatings.
Barium Sulfate contributes to corrosion resistance in protective paints.

Barium Sulfate is used in printing inks.
Barium Sulfate improves print clarity and pigment distribution.
Barium Sulfate enhances UV stability in ink formulations.

Barium Sulfate is used in rubber compounds.
Barium Sulfate improves mechanical strength in elastomers.
Barium Sulfate enhances wear resistance in industrial rubber products.

Barium Sulfate is used in paper manufacturing.
Barium Sulfate increases opacity and brightness in coated papers.
Barium Sulfate improves printability in specialty paper grades.

Barium Sulfate is used in oil and gas drilling.
Barium Sulfate provides weight to drilling muds for pressure control.
Barium Sulfate stabilizes boreholes in high-pressure drilling operations.

Barium Sulfate is used in radiation shielding materials.
Barium Sulfate increases absorption of X-rays and gamma rays.
Barium Sulfate is incorporated into shielding panels for medical and industrial equipment.

Barium Sulfate is used in medical imaging.
Barium Sulfate functions as a radiopaque contrast agent in CT and X-ray diagnostics.
Barium Sulfate provides high-resolution images of the gastrointestinal tract.

Barium Sulfate is used in construction materials.
Barium Sulfate increases density in polymer concrete and flooring compounds.
Barium Sulfate enhances wear resistance in industrial flooring.

Barium Sulfate is used in adhesives and sealants.
Barium Sulfate improves viscosity control in caulks and sealant systems.
Barium Sulfate enhances durability under mechanical stress.

Barium Sulfate is used in cosmetics.
Barium Sulfate provides smooth texture in pressed powders.
Barium Sulfate improves opacity in cosmetic formulations.

DESCRIPTION

Barium Sulfate is a white, odorless, crystalline inorganic powder.
Barium Sulfate occurs naturally as barite and can be synthetically precipitated for high-purity uses.
Barium Sulfate is chemically inert and insoluble in water and most solvents.

Barium Sulfate has a high refractive index, contributing to its opacity and brightness.
Barium Sulfate offers excellent dispersibility in waterborne and solventborne systems.
Barium Sulfate maintains stable particle size distributions for consistent performance.

Barium Sulfate resists attack from acids and alkalis.
Barium Sulfate remains stable under high temperatures.
Barium Sulfate does not absorb UV radiation and aids in UV shielding.

Barium Sulfate provides low oil absorption, improving viscosity control in coatings.
Barium Sulfate enhances mechanical strength and scratch resistance in plastics.
Barium Sulfate reduces gloss without compromising color brightness when used as a pigment extender.

Barium Sulfate is non-toxic and widely approved for medical use due to its insolubility.
Barium Sulfate is compatible with a wide range of polymers, binders, and additives.
Barium Sulfate supports high-density applications requiring weight and stability.

Barium Sulfate is an inorganic compound consisting of barium cations and sulfate anions.
Barium Sulfate is a dense, white, odorless powder widely used as a functional filler.
Barium Sulfate exhibits extremely low solubility in water and most solvents.

Barium Sulfate has a high specific gravity, making it useful in weighting applications.
Barium Sulfate offers excellent chemical inertness and environmental stability.
Barium Sulfate maintains whiteness and brightness under high temperatures.

Barium Sulfate has excellent UV resistance and photostability.
Barium Sulfate provides a smooth, non-abrasive surface in coatings.
Barium Sulfate is compatible with a broad range of polymers and resins.

Barium Sulfate disperses uniformly in aqueous and solventborne systems.
Barium Sulfate improves mechanical performance of polymeric materials.
Barium Sulfate enhances opacity and hiding power in coating applications.

Barium Sulfate should be stored in dry, sealed containers to prevent contamination.
Barium Sulfate remains stable under normal storage conditions.
Barium Sulfate is widely used across plastics, coatings, drilling, medical imaging, and construction applications due to its density, stability, and chemical inertness.

PROPERTIES

Chemical Formula: BaSO₄
Molecular Weight: 233.39 g/mol
Appearance: White crystalline powder
Odor: Odorless
Density (True Density): ~4.50 g/cm³
Bulk Density: Typically 1.0–2.0 g/cm³ depending on grade
Melting Point: ~1,580°C
Boiling Point: Decomposes before boiling
Refractive Index: ~1.64–1.68
Oil Absorption: ~10–20 g/100 g (grade dependent)
pH (aqueous dispersion): 6.5–7.5
Solubility in Water: Insoluble (<0.001 g/100 mL)
Solubility in Acids: Insoluble in hydrochloric and sulfuric acid; slowly soluble in hot concentrated sulfuric acid
Hardness (Mohs): ~3–3.5
Thermal Stability: Excellent resistance to decomposition under heat
UV Stability: High resistance to UV light exposure
Particle Size: Typically 0.7–5 µm (precipitated grades may be finer)

FIRST AID

Inhalation:
Move to fresh air.
Seek medical attention if irritation or coughing persists.

Skin Contact:
Wash with water and soap.
Seek medical care if irritation develops.

Eye Contact:
Rinse cautiously with clean water for several minutes.
Seek medical attention if discomfort continues.

Ingestion:
Non-toxic due to insolubility; seek medical advice if swallowed.

Note to Physicians:
Treat symptomatically; material is inert.

HANDLING AND STORAGE

Handling:
Use dust masks and goggles to avoid inhalation of fine particles.
Ensure adequate ventilation when handling powders.
Avoid creating airborne dust.

Avoidance:
Keep away from strong reducing agents.
Prevent contamination with reactive chemicals.

Spill Procedures:
Sweep or vacuum gently to avoid dust generation.
Dispose according to local regulations.

Storage:
Store in a cool, dry area.
Keep containers sealed to prevent moisture contamination.
Protect from particulate contamination.