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Cobalt is also used in the petroleum industry as a catalyst when refining crude oil. This is to purge it of sulfur, which is very polluting when burned and causes acid rain. [11] Cobalt is the active center of a group of coenzymes called cobalamins. Vitamin B 12, the best-known example of the type, is an essential vitamin for all animals.
The compounds cobalt silicate and cobalt(II) aluminate (CoAl 2 O 4, 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 ...
Bismuth fractures while Cobalt is more like a true metal. The regulus of Shetz fuses with flint and fixed alkali giving a blue glass known as zaffera, sasre, or smalt. Bismuth does not. Bismuth melts easily and if kept melted, calcinates forming a yellow powder. Bismuth amalgamates with Mercury; the regulus of Cobalt does not at all.
Naturally occurring cobalt, Co, consists of a single stable isotope, 59 Co (thus, cobalt is a mononuclidic element). Twenty-eight radioisotopes have been characterized; the most stable are 60 Co with a half-life of 5.2714 years, 57 Co (271.811 days), 56 Co (77.236 days), and 58 Co (70.844 days). All other isotopes have half-lives of less than ...
Cobalt is essential to the metabolism of all animals. It is a key constituent of cobalamin, also known as vitamin B 12, the primary biological reservoir of cobalt as an ultratrace element. [1] [2] Bacteria in the stomachs of ruminant animals convert cobalt salts into vitamin B 12, a compound which can only be produced by bacteria or archaea.
Around 75 per cent of the world’s cobalt is mined in the DRC -- and the world cannot get enough of it. The rare, silvery metal is an essential component to every lithium-ion rechargeable battery ...
Eventually, a less costly pigment was developed from cobalt ores, giving the color its present-day name. Cosmic Cobalt has been a favorite color for artists of every era. Getty Images/Wikimedia ...
Cobalt(II) azide (Co(N 3) 2) is another binary compound of cobalt and nitrogen that can explode when heated. Cobalt(II) and azide can form Co(N 3) 2− 4 complexes. [9] Cobalt pentazolide Co(N 5) 2 was discovered in 2017, and it exists in the form of the hydrate [Co(H 2 O) 4 (N 5) 2]·4H 2 O. It decomposes at 50~145 °C to form cobalt(II) azide ...