BISMUTH Metal
MATERIAL OVERVIEW
Characteristics: Crystalline, brittle metal, with reddish tinge. Soluble in nitric and hydrochloric acids. Highly diamagnetic (mass susceptibility -1.35 X 106). Expands 3.3% on solidification. Electrical resistivity higher in solid than in liquid state. Extrudable at 437 oF, not fabricable at room temperature. Brinell hardness 7. Thermal conductivity is lowest of all metals except mercury. On heating it burns to form the oxide.
Derivation: Debismuthizing of lead bullion by (a) fractional crystallization, (b) electrolytic (Betts) refining, or (c) addition of calcium or magnesium (Betterton-Kroll process) which removes bismuth.
Hazard: Flammable in powder form.
Application: BISMUTH could be used in different fields, according to its purity. Bismuth has a low thermal conductivity and is both stable and non-toxic. These properties make the metal an ideal substitute for lead in everything from pipes and bullets to fishing weights and sprinkler triggers. High purity bismuth is used to synthesize pharmaceutical chemicals, superconductive ceramics and oxide crystals for the production of bismuth ortho-germanate crystals.
BISMUTH and series products from Wuhan Xinrong
| Material name | Purity | size |
| High purity Bismuth | 5N-7N |
|
| Bismuth Powder | 4N-5N | 60 -300 mesh |
| Bismuth Shot | 4N-5N | 2-6mm |
| Bismuth Needle | 4N |
|
| Bismuth Trioxide | 4N-5N |
|
BISMUTH shape and purity could be customized by customer request
Packing: After being packed in polyester films, then packed in plastic films or glass tubes in vacuum.
GENERAL PROPERTIES
| Symbol: | Bi |
| Cas | 7440-69-9 |
| Atomic Number: | 83 |
| Atomic Weight: | 208.9804 |
| Density: | 9.747 gm/cc |
| Melting Point: | 271.3 oC |
| Boiling Point: | 1560 oC |
| Thermal Conductivity: | 0.0792 W/cm/oK @ 298.2 oK |
| Electrical Resistivity: | 106.8 microhm-cm @ 0 oC |
| Electronegativity: | 1.9 Paulings |
| Specific Heat: | 0.0296 Cal/g/oK @ 25 oC |
| Heat of Vaporization: | 42.7 K-Cal/gm atom at 1560 oC |
| Heat of Fusion: | 2.505 Cal/gm mole |
TYPICAL ANALYSES
Impurities in ppm
| Material / Purity: | 4N5 | 5N | 6N |
| Cu | <1 | 0.2 | <0.1 |
| Pb | <10 | 3.0 | 0.3 |
| Ag | <10 | 0.3 | - |
| Sn | 2 | 2 | - |
| Mg | <5 | <2 | <0.1 |
| Si | <5 | <2 | <0.1 |
