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Bismuth Needle

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Bismuth is a silvery-white metallic element with atomic number 83. Bismuth has the interesting physical property of being less dense as a solid than it is as a liquid, the only other common substances which expand when they freeze are antimony metal and water. This property of expanding when cooling is responsible for much of bismuth’s commercial uses. Bismuth is a poor conductor of electricity and heat (scientists say it has poor electrical and thermal conductivities). Bismuth metal is relatively inert and non-toxic, it has replaced toxic lead in many applications such as plumbing, bullets, birdshot, metal alloys, soldering, and other applications.
 

Purity 99.99%
Size length 2-5 cm

Molar mass

465.96 g/mol

Density

9.78 g·cm−3(at 0 °C, 101.325 kPa)

Melting point

544.7 K ​(271.5 °C, ​520.7 °F)

Boiling point

1837 K ​(1564 °C, ​2847 °F)
Solubility in water

insoluble

Solubility

soluble in concentrated nitric acid

Thermal conductivity

7.97 W·m−1·K−1

Electrical resistivity

at 20 °C: 1.29 µΩ·m

Magnetic ordering diamagnetic


Bismuth needle is mainly used for metal alloys, thermoelectrical materials, bismuth oxide, paint material, additive, activator, medicine, toiletry, semiconductor, bismuth crystal, jewelry, etc. 


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