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Chemical database: Gold

chemistry tutorials - gold

Chemical formula Au
Molar mass 196.96 g mol -1
Density 19.30 g cm -3
Melting point 1064.2 °C
Boiling point 2856.0 °C
Solubility -
CAS number 7440-57-5
Hazards -

Gold is a metallic chemical element that comes in form of a shiny yellow solid at standard conditions. Gold is one of the few metals to occur naturally as an uncompounded mineral. Because of that, it is one of the first metals which mankind has encountered. Gold is a highly sought-after metal, it is used mostly in jewellery and in investments. Only about 10% of the produced gold is used in industry - mainly in medicine and electronics. Because of its high electrical conductance, it is often used in devices where the highest performance is required (special types of computers, spacecraft, fighter aircraft, and so on).

Jewellery is one of the most widespread sources of gold, although such gold is commonly mixed with other elements to form specific types of alloys. Gold of highest purity is known as 24 carat gold. Gold with purity values below 24 carat, usually has significant amounts of other metals added. In small amounts, gold can be found in certain types of electronics. There are also many natural sources of gold. One of them is the Drava river in Croatia, which is auriferous.

 

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