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Co (Cobalt)

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Keterangan

     Lustrous, silvery-blue, hard mental; ferromagnetic. Stable in air, slowly attacked by dilute acids. Cobalt 60 is a useful radio isotope

Nama lain (trademark, branding etc.)

Cobaltum, Kobalt, Cobalt, Cobalto, Kobalt - r, Kobolt, Кобальт, 

Spesifikasi Produk

Overview of Cobalt
Atomic Number 27
Group 9
Period 4
Series Transition Metals
Relative Atomic Mass (12C=12.000)  58.933
Boiling Point 3143K 2870°C 5198°F
Melting Point 1768K 1495°C 2723°F
Density/kg m-3  8900 (293K)
Ground State Electron Configuration  [Ar]3d74s2
Electron Affinity(M-M-)/kJ mol-1  -102
Discoverer George Brandt
Discovery Location Stockholm Sweden
Discovery Year 1735
Name Origin German: kobalt or kobold (evil spirit); Greek: cobalos (mines).

Aplikasi

     Cobalt metal is used in electroplating because of its attractive appearance, hardness and resistance to oxidation. It is alloyed with iron, nickel and other metals, and used in jet turbines and gas turbine generators.
     Cobalt salts have been used for centuries to produce brilliant blue colours in porcelain, glass, pottery and enamels.

Bahan Baku

Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt in the Earth's crust is found only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.

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