Platinum

Platinum

Platinum MetalPlatinum is malleable and ductile and resists corrosion. It has a high specific gravity and an attractive dark gray color, which is appealing to many wearers. The durability of platinum makes it very popular in the jewelry industry, especially for use with precious stones.

Platinum Ore

Palladium, ruthenium, rhodium, osmium, and iridium are by-products of platinum ore. Palladium and ruthenium are often used in platinum alloys. The addition of these metals can make platinum lighter, which is useful for making large jewelry items, and can increase platinum's hardness and strength.

Physical Properties of Platinum

Phase

Solid

Density (near r.t.)

21.45 g·cm−3

Liquid density at m.p

19.77 g·cm−3

Melting point

2041.4 K, 1768.3 °C, 3214.9 °F

Boiling point

4098 K, 3825 °C, 6917 °F

Heat of fusion

22.17 kJ·mol−1

Heat of vaporization

469 kJ·mol−1

Heat capacity

25.86 J·mol−1·K−1

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