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7440-48-4
Co
2700RD
99.95%
Dia 12.5mm
231-158-0
Class 4.1
UN3089
PG III
Characteristic
Cobalt is a ferromagnetic metal with silvery white the surface is silvery white, slightly pale pink, is located in the fourth cycle in the periodic table, the first Ⅷ, atomic number 27, close the six-party crystals, common valence is + 2, + 3.Cobalt is a shiny steel-gray metal, hard and brittle, ferromagnetic, when heated to 1150℃ magnetic disappear.Cobalt has valences of +2 and +3.At normal temperature, it does not work with water or air and is similar to iron and nickel.
Phase at STP:solid
Appearance:hard lustrous bluish gray metal
Melting point:1768 K (1495 °C, 2723 °F)
Boiling point:3200 K (2927 °C, 5301 °F)
Density (near r.t.):8.90 g/cm3
when liquid (at m.p.):8.86 g/cm3
Heat of fusion:16.06 kJ/mol
Heat of vaporization:377 kJ/mol
Molar heat capacity:24.81 J/(mol·K)
Application
Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt(II) aluminate (CoAl2O4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. Cobalt occurs naturally as only one stable isotope, cobalt-59. Cobalt-60 is a commercially important radioisotope, used as a radioactive tracer and for the production of high-energy gamma rays.
Characteristic
Cobalt is a ferromagnetic metal with silvery white the surface is silvery white, slightly pale pink, is located in the fourth cycle in the periodic table, the first Ⅷ, atomic number 27, close the six-party crystals, common valence is + 2, + 3.Cobalt is a shiny steel-gray metal, hard and brittle, ferromagnetic, when heated to 1150℃ magnetic disappear.Cobalt has valences of +2 and +3.At normal temperature, it does not work with water or air and is similar to iron and nickel.
Phase at STP:solid
Appearance:hard lustrous bluish gray metal
Melting point:1768 K (1495 °C, 2723 °F)
Boiling point:3200 K (2927 °C, 5301 °F)
Density (near r.t.):8.90 g/cm3
when liquid (at m.p.):8.86 g/cm3
Heat of fusion:16.06 kJ/mol
Heat of vaporization:377 kJ/mol
Molar heat capacity:24.81 J/(mol·K)
Application
Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt(II) aluminate (CoAl2O4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. Cobalt occurs naturally as only one stable isotope, cobalt-59. Cobalt-60 is a commercially important radioisotope, used as a radioactive tracer and for the production of high-energy gamma rays.
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