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7440-57-5
Au
7900GZ
99%-99.999%
Dia 0.06mm
231-165-9
Characteristic
Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79, making it one of the highest atomic number elements that occur naturally. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions.
Phase at STP solid
Melting point 1337.33 K (1064.18 °C, 1947.52 °F)
Boiling point 3243 K (2970 °C, 5378 °F)
Density (near r.t.) 19.30 g/cm3
when liquid (at m.p.) 17.31 g/cm3
Heat of fusion 12.55 kJ/mol
Heat of vaporization 342 kJ/mol
Molar heat capacity 25.418 J/(mol·K)
Application
A relatively rare element, gold is a precious metal that has been used for coinage, jewelry, and other arts throughout recorded history. In the past, a gold standard was often implemented as a monetary policy.
Gold's high malleability, ductility, resistance to corrosion and most other chemical reactions, and conductivity of electricity have led to its continued use in corrosion resistant electrical connectors in all types of computerized devices (its chief industrial use). Gold is also used in infrared shielding, colored-glass production, gold leafing, and tooth restoration.
Characteristic
Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79, making it one of the highest atomic number elements that occur naturally. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions.
Phase at STP solid
Melting point 1337.33 K (1064.18 °C, 1947.52 °F)
Boiling point 3243 K (2970 °C, 5378 °F)
Density (near r.t.) 19.30 g/cm3
when liquid (at m.p.) 17.31 g/cm3
Heat of fusion 12.55 kJ/mol
Heat of vaporization 342 kJ/mol
Molar heat capacity 25.418 J/(mol·K)
Application
A relatively rare element, gold is a precious metal that has been used for coinage, jewelry, and other arts throughout recorded history. In the past, a gold standard was often implemented as a monetary policy.
Gold's high malleability, ductility, resistance to corrosion and most other chemical reactions, and conductivity of electricity have led to its continued use in corrosion resistant electrical connectors in all types of computerized devices (its chief industrial use). Gold is also used in infrared shielding, colored-glass production, gold leafing, and tooth restoration.
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