Gold

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Gold
Chemical formula Au
Atomic Number 79 
OTP appearance golden solid 
Molar Mass(g/mol) 197 
Melting Point(°C) 1064 
Boiling Point(°C) 2970 
Density(g/cc) 19.3 
Coefficient of Thermal Expansion(×10-6 °C-1) 14.2
NFPA 704
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Gold was one of the seven metals of antiquity, and has been used as currency for all of written history.

Uses

Justification Questioned

Other

  • unreactive coatings
  • drawn into wire
  • decorative

Natural Occurrence

  • Elemental gold does occur naturally.

Hazards

  • Gold is generally recognized as safe, although soluble gold salts can cause harm if ingested.

Production

Gold appears in nature primarily as an element, so it is gathered or harvested, "panned" or "mined" rather than produced.

Purification

Testing

Storge

Disposal

Gold cxan be disposed of directly into the environment

See Also