Description

Bismuth(III) Oxide is a high-purity inorganic compound with the CAS registry number 12048-50-9. This versatile material serves as a critical precursor and functional additive in advanced manufacturing and electronics. It is essential for industries requiring reliable, high-quality inorganic reagents for precise formulations and processes.

Application

• Electronic Ceramics & Varistors: A key raw material in the production of zinc oxide varistors (ZOV) for surge protection and multilayer ceramic capacitors (MLCCs).
• Catalyst Manufacturing: Used as a catalyst and catalyst support in selective oxidation and ammoxidation reactions within the chemical industry.
• Glass & Pigment Production: Imparts a distinctive yellow color in specialty glasses, enamels, and ceramic glazes.
• Pharmaceutical Intermediates: Employed in the synthesis of certain bismuth-containing active pharmaceutical ingredients (APIs) for gastrointestinal treatments.
• Pyrotechnics & Smoke Compositions: Acts as a burning-rate modifier and smoke-generating agent in specialized formulations.
• Superconductor Research: A vital component in the synthesis of high-temperature bismuth-strontium-calcium-copper-oxide (BSCCO) superconductors.
• Fire Retardant Synergist: Used in combination with other compounds to enhance flame retardancy in polymers and plastics.
• Laboratory Reagent: Serves as a starting material for synthesizing other bismuth salts and compounds in research and development.

Basic Information

Product Name	Bismuth(III) Oxide
CAS No.	12048-50-9
Molecular Formula	Bi2O3
Molecular Weight	465.96 g/mol
Synonyms	Bismuth Trioxide; Bismuth Sesquioxide; Dibismuth Trioxide; Bismuth(3+) Oxide; Bismuth Yellow; CI 77160; Bismite (mineral form); Bismuth Oxide Yellow
EINECS	234-977-0

Quality Control

Our Bismuth(III) Oxide is manufactured under a strict quality management system. Each batch undergoes comprehensive analysis to ensure it meets precise chemical and physical specifications, including purity, particle size, and heavy metal limits. Certificates of Analysis (COA) are provided with every shipment to guarantee traceability and compliance with your technical requirements.

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 strong reducing agents.

Specification

Item	Specification
Appearance	Yellow powder
Identification (IR)	Conforms
Assay (Bi2O3)	≥ 99.0 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %
Nitrate (NO3)	≤ 0.005 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm
Copper (Cu)	≤ 5 ppm
Lead (Pb)	≤ 5 ppm
Particle Size (D50)	1.0 - 5.0 µm (or as specified)

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