Description

Barium Sulfate is a high-purity, chemically inert inorganic compound renowned for its exceptional density and opacity to X-rays. This combination of properties makes it a critical functional additive and diagnostic agent across diverse industrial and medical sectors. Key industries that rely on this material include medical imaging, plastics, coatings, and oil & gas drilling.

Application

• Medical Radiography: As a non-toxic, radio-opaque contrast medium for X-ray imaging of the gastrointestinal tract.
• Plastics & Polymer Masterbatch: Used as a high-density filler and brightening agent to improve weight, sound dampening, and surface finish in engineering plastics, PVC, and rubber products.
• Paints & Coatings: Acts as an extender pigment and functional filler to enhance film density, durability, chemical resistance, and brightness in industrial primers and marine paints.
• Drilling Fluids (Barite): A primary weighting agent to increase mud density, control wellbore pressure, and stabilize drilling operations in the oil and gas industry.
• Paper Manufacturing: Used as a filler and coating pigment to improve paper brightness, opacity, smoothness, and printability.
• Lithopone Production: A key raw material in the manufacture of lithopone, a white pigment used in paints and plastics.
• Radiation Shielding: Incorporated into concrete, polymers, and glass for its ability to absorb X-ray and gamma radiation in medical and nuclear facilities.

Basic Information

Product Name	Barium Sulfate
CAS No.	7727-43-7
Molecular Formula	BaSO4
Molecular Weight	233.39 g/mol
Synonyms	Barite; Barytes; Blanc fixe; Heavy Spar; Barium sulfate (1:1); Sulfuric acid, barium salt (1:1); CI 77120; Artificial Barite; Precipitated Barium Sulfate
EINECS	231-784-4

Quality Control

Our Barium Sulfate is manufactured under a stringent quality management system. Production adheres to relevant industry standards, including USP, EP, and FCC for applicable grades, ensuring consistent purity and performance. Every batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, heavy metal content, and particle size distribution.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong acids and aluminum. The product is not hygroscopic under normal conditions but should be protected from prolonged exposure to moisture to prevent caking.

Specification

Item	Specification
Appearance	White, fine powder
Identification (IR)	Conforms
Assay (as BaSO4)	≥ 98.0%
pH (10% suspension)	6.0 - 9.0
Loss on Drying	≤ 0.5%
Acid-soluble substances	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Particle Size (D50)	1 - 10 µm (Grade Dependent)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.