Antimony

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Antimony
Chemical formula Sb
Atomic Number 51 
OTP appearance silver-grey solid 
Molar Mass(g/mol) 121.76 
Melting Point(°C) 630.63 
Boiling Point(°C) 1635 
Density(g/cc) 6.697
NFPA 704
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Uses

Other

Natural occurrence

  • Does (very rarely) occur naturally as native metal.
  • Primary ore is Stibnite

Hazards

Production

Extraction

The primary ore of antimony is Stibnite, Sb2S3.

roast/reduce

Stibnite, roasted in air, converts to antimony trioxide, which can be carbothermically reduced.

binary salt

It is possible to directly reduce stibnite to antimony in a molten salt bath [1]

Purification

Testing

Storage

Disposal

See Also

References

  1. Ye, Longgang; Tang, Chaobo; Chen, et al, Yongming (2015) "One-step extraction of antimony from low-grade stibnite in Sodium Carbonate – Sodium Chloride binary molten salt"
    Journal of Cleaner Production; pp134–139. Elsevier
    DOI:10.1016/j.jclepro.2015.01.018