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Bismuth Oxide, commonly known as Bismuth(III) Oxide or Dibismuth Trioxide, is an inorganic compound of bismuth and oxygen with the chemical formula Bi₂O₃. It is generally encountered as a yellow powder and has a molecular weight of approximately 465.96 g/mol. This compound is important in inorganic chemistry, solid-state research, and the preparation of bismuth-containing materials. Its characteristic chemical and thermal properties make it relevant to investigations involving metal oxides, precursor synthesis, and controlled thermal transformations. In educational and research laboratories, Bismuth Oxide can support studies of inorganic compounds, material composition, and selected ceramic or electronic material preparation procedures. Its suitability for a particular experiment depends on the required grade, particle characteristics, and experimental method. This 250 g pack is intended for laboratory and research applications consistent with the material specifications and applicable chemical safety procedures.
Product Specifications
| Specification | Details |
|---|---|
| Appearance | Yellow powder |
| Assay | 99% |
| Chemical Name | Bismuth(III) Oxide |
| Alternate Names | Bismuth Oxide, Bismuth Trioxide, Dibismuth Trioxide, Bismuth Sesquioxide |
| Molecular Formula | Bi₂O₃ |
| Empirical Formula | Bi₂O₃ |
| CAS Number | 1304-76-3 |
| Molecular Weight | 465.96 g/mol |
| Grade | LR Laboratory Reagent |
Key Features of Bismuth Oxide
- Defined inorganic composition: Bismuth(III) Oxide has the chemical formula Bi₂O₃, containing bismuth and oxygen in a fixed stoichiometric ratio.
- Characteristic appearance: Its established yellow powder form is useful for visual identification during laboratory handling.
- Known formula mass: The molecular weight of approximately 465.96 g/mol supports stoichiometric calculations and quantitative reagent planning.
- Thermal stability: Bismuth Oxide has a high melting point of approximately 817 °C, making it relevant to controlled thermal studies and high-temperature materials research.
- Materials science relevance: Its oxide chemistry makes it useful in selected investigations involving ceramic materials, solid-state chemistry, and bismuth-containing compounds.
Laboratory Applications of Bismuth Oxide
- Inorganic chemistry experiments: Used in suitable educational and university investigations of metal oxides, chemical composition, and inorganic material properties.
- Precursor synthesis: Can serve as a starting material in appropriate procedures for preparing selected bismuth-containing compounds.
- Thermal analysis research: Suitable for controlled investigations of high-temperature behaviour and solid-state transformations under appropriate experimental conditions.
- Ceramic materials research: Used in selected research procedures involving the preparation and characterization of bismuth-containing ceramic compositions.
- Electronic materials investigations: Can be used as a precursor or component in suitable studies of bismuth-based functional materials, depending on the composition and synthesis requirements.
Why Choose Lab Wale to Buy Bismuth Oxide
Lab Wale provides a sourcing option for laboratory chemicals and scientific supplies used by schools, colleges, universities, research centres, and laboratory professionals. When purchasing Bismuth Oxide, consider its chemical identity, stated grade, required quantity, and suitability for the intended experiment or synthesis procedure. Reviewing available product specifications and relevant safety documentation helps laboratories make informed procurement decisions. The 250 g pack offers a quantity option for institutional laboratory work and research projects that require an appropriate bismuth oxide material.
Frequently Asked Questions About Bismuth Oxide
What is Bismuth Oxide used for in laboratories?
Bismuth Oxide is used in inorganic chemistry, materials science, and selected synthesis procedures. It can serve as a starting material for preparing bismuth-containing compounds and may be incorporated into research involving ceramic and electronic materials. The appropriate application depends on the required specifications and experimental method.
What are the molecular formula and molecular weight of Bismuth Oxide?
Bismuth(III) Oxide has the molecular formula Bi₂O₃ and a molecular weight of approximately 465.96 g/mol. Its empirical formula is also Bi₂O₃ because the atom ratio cannot be reduced to smaller whole numbers. These values are useful for stoichiometric calculations and reagent preparation.
What is the CAS number of Bismuth Oxide?
The CAS Registry Number for Bismuth(III) Oxide is 1304-76-3. This identifier distinguishes the compound from other bismuth oxides and bismuth-containing substances. It supports accurate chemical procurement, laboratory inventory management, and identification of the appropriate safety documentation.
What is the melting point of Bismuth Oxide?
Bismuth(III) Oxide has a reported melting point of approximately 817 °C. This high-temperature property makes it relevant to controlled thermal studies and materials research. Experiments involving elevated temperatures require suitable laboratory equipment, appropriate ventilation, and established thermal safety procedures.
How should Bismuth Oxide be stored and handled safely?
Store Bismuth Oxide in a tightly closed, compatible container in a cool, dry laboratory storage area. Avoid creating or inhaling dust and prevent contact with the eyes. Wear appropriate protective equipment and follow the current Safety Data Sheet and institutional procedures for handling, spill management, and chemical waste disposal.
Storage Conditions for Bismuth Oxide
Store Bismuth Oxide in a tightly closed, compatible, clearly labelled container in a cool, dry location. Protect the powder from contamination and unnecessary moisture exposure. Keep it segregated from incompatible chemicals in accordance with the applicable Safety Data Sheet, and ensure that the container is securely closed after each use to maintain suitable laboratory storage conditions.
Precautions for Handling Bismuth Oxide
Review the current Safety Data Sheet before handling Bismuth Oxide. Wear suitable safety goggles, chemical-resistant gloves, and protective clothing. Avoid generating or inhaling dust, and use appropriate ventilation during weighing, transfer, or other powder-handling operations. Prevent eye contact and environmental release, and follow institutional procedures for spill management, emergency response, and chemical waste disposal.


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