Description

Bismuth Oxide is a high-purity inorganic compound essential for advanced material science and industrial manufacturing. Its unique combination of chemical stability, high density, and electrical properties makes it a critical component in specialized applications. This product is primarily sought by manufacturers in the electronics, ceramics, glass, and pharmaceutical industries for its performance and reliability.

Application

• Electronic Ceramics & Varistors: A key raw material in zinc oxide varistors (MOVs) for surge protection and in multilayer ceramic capacitors (MLCCs).
• Glass & Optical Products: Used as a polishing agent for precision glass and crystal, and as an additive to increase refractive index and density in lead-free glass.
• Catalyst Manufacturing: Serves as a catalyst or catalyst precursor in selective oxidation reactions and the production of acrylic fibers.
• Pharmaceutical Intermediates: Employed in the synthesis of bismuth subsalicylate and other gastroprotective active pharmaceutical ingredients (APIs).
• Pigments & Coatings: Imparts a distinctive yellow color in ceramics (glazes) and is used in corrosion-resistant, high-temperature paints.
• Pyrotechnics & Smoke Compositions: Acts as an oxidizer and smoke-producing agent in specialized pyrotechnic formulations.
• Superconductor Research: A crucial component in the synthesis of high-temperature bismuth-strontium-calcium-copper-oxide (BSCCO) superconductors.

Basic Information

Product Name	Bismuth Oxide
CAS No.	1304-76-3
Molecular Formula	Bi2O3
Molecular Weight	465.96 g/mol
Synonyms	Bismuth(III) Oxide; Bismuth Trioxide; Dibismuth Trioxide; Bismuth Sesquioxide; Bismuth Yellow; C.I. 77160; Bismite (mineral form); Bismuthous Oxide
EINECS	215-134-7

Quality Control

Our Bismuth Oxide is manufactured under a stringent quality management system. Each batch is tested to ensure it meets precise chemical and physical specifications, including purity, particle size distribution, and heavy metal limits. Certificates of Analysis (COA) are provided with every shipment, and we support compliance with REACH, ISO, and other relevant global regulatory frameworks.

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 reducing agents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Yellow to yellowish-brown powder
Identification (IR)	Conforms
Assay (Bi2O3)	≥ 99.0 %
Particle Size (D50)	1.0 - 5.0 µm (or as specified)
Loss on Drying	≤ 0.5 %
Chloride (Cl)	≤ 0.01 %
Nitrate (NO3)	≤ 0.01 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm
Copper (Cu)	≤ 5 ppm
Lead (Pb)	≤ 5 ppm

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