Bismuth is a chemical element with symbol Bi and atomic number 83. It is a white, crystalline, brittle metal when freshly produced and it often presents a pinkish tinge in the air. Bismuth is the most diamagnetic element, and its thermal conductivity is lower than that of any metal except mercury. Bismuth metal is primarily used in the manufacture of low-melting solders and fusible alloys.
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Description of Bismuth Powder
Bismuth powder is a finely divided, metallic powder with a silvery-white color and a subtle pinkish hue. It is produced by grinding or atomizing bismuth, which is an element with the atomic number 83, occurring in nature. Bismuth powder has a unique combination of physical and chemical properties that make it extremely useful in a wide array of industries. This comes, normally, in different sizes of particles for specific applications and further processing or alloying into more specialized uses.
Properties of Bismuth Powder
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Chemical Symbol
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Bi
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Atomic Number
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83
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Appearance
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Silvery-white with a slight pink tint
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Density
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9.78 g/cm³ (high density)
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Melting Point
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271°C (520°F)
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Boiling Point
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1,564°C (2,847°F)
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Electrical Conductivity
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Low (bismuth is a poor conductor of electricity)
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Thermal Conductivity
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Low (among the lowest of all metals)
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Magnetic Properties
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Diamagnetic (repels magnetic fields)
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Toxicity
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Low (bismuth is one of the least toxic heavy metals)
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Reactivity
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Chemically stable and non-reactive under normal conditions, but can oxidize over time
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Crystallography
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Rhombohedral crystal structure
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Applications of Bismuth Powder
Bismuth is mainly found in nature as sulfide and oxide ores and is extracted primarily through pyrometallurgy. Its industrial uses are diverse: it is crucial for manufacturing low-melting-point alloys used in fire and electrical safety systems, and serves as an essential component in gastrointestinal medications. Besides these applications, bismuth is also utilized in producing lead-free pigments, electronic ceramics, semiconductor components, and chemical catalysts.
