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Кобальт

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Акриловый кубик 25 мм. Кобальт (Co). Co acrylic cube 25x25x25 mm. Articul: ac27
1 500,00 ₽
Брелок 20х30 мм. Кобальт. Co Keyring 20x30 mm. Articul: pt27
600,00 ₽
Брелок 20х40 мм. Кобальт (Co) Co keychain 20x40 mm. Articul: 27577
700,00 ₽
Брелок. Кобальт. Trinket. Cobalt. Articul: 2757120420
550,00 ₽
Кобальт (Co), 99,9%, 5 гр. – в стеклянной баночке. Cobalt (Co), 99.9%, 5 gr. - in a glass jar. Articul: 2792120118
320,00 ₽
Кобальт (Co), 99,99%, 3 гр. – гранулы. Cobalt (Co), 99.99%, 3 gr. - granules. Articul: 2712110619
350,00 ₽
Cobalt (Co) cube, 99.96%, 10x10 mm. Articul: 2713140119
1 700,00 ₽
Пуговица 18 мм. Кобальт. Co. Chemical button 18 mm. Articul: but27
340,00 ₽
Кобальт

 
Atomic number       27
Atomic mass       58,933
Density, kg / m?     8900
Temperature
melting, ° С       1495
 
Cobalt is a silvery white, slightly yellowish metal with a pinkish or bluish tint. It exists in two crystalline modifications. Cobalt oxide was used in Ancient Egypt, Babylon, China for staining glasses and enamels blue. For the same purpose, in the 16th century in Western Europe, they began to use tsafra, or safflower, - a gray earthy mass that was obtained by roasting some ores called "kobold". These ores emitted plentiful poisonous smoke during roasting, and it was not possible to smelt metal from the product of their roasting. Medieval miners and metallurgists considered this to be the tricks of mythical creatures - kobolds (from German Kobold - brownie, gnome). In 1735, the Swedish chemist G. Brandt, heating a mixture of tsaffra with coal and flux in a blast furnace, obtained a metal that he called the "kobold king". This name was soon changed to "cobolt" and then to "cobalt".

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