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Bismuth Oxide Bi2O3 >99,9% - 50g
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Description
Bismuth(III) Oxide – Bi₂O₃ >99.9%
Other Names: Bismuth trioxide, Bismuth sesquioxide
Chemical Formula: Bi₂O₃
Molar Mass: 465.96 g/mol
CAS Number: 1304-76-3
Appearance: Pale yellow to orange-yellow powder
Odor: Odorless
Physical and Chemical Properties
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Density: 8.9–9.5 g/cm³
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Melting Point: ~817 °C
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Boiling Point: Decomposes at high temperature
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Solubility:
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Water: Insoluble
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Acids: Soluble in hydrochloric and nitric acid
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Refractive Index: High (used in optical materials)
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Crystal Structure: Monoclinic (α-Bi₂O₃) at room temperature
Applications
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Ceramics and Glass: Used in high-refractive index glass, glazes, and optical coatings
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Electronics: Employed in dielectric materials and oxide ion conductors
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Catalysis: Acts as a catalyst or support in organic transformations and oxidation reactions
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Pigments: Source of bright yellow coloration in high-performance coatings
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Synthesis: Intermediate in bismuth compound production
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Fusible Alloys: Used in some low-melting alloys due to its high density
Safety Information
This chemical does not meet GHS hazard criteria for 100% (9 of 9) of all reports. Pictograms displayed are for < 0.1% (0 of 9) of reports that indicate hazard statements.
Handling and Storage
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Handling: Avoid generation of dust. Work under fume hood or ventilated space when handling powder
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Storage: Store in a sealed container in a cool, dry place, away from acids and moisture
Environmental Considerations
While bismuth compounds are considered less toxic than heavy metals like lead or cadmium, fine Bi₂O₃ particles may pose a hazard to aquatic environments if released. Avoid uncontrolled disposal.