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Mg
Magnesium
Atomic no.:
12
Atom. weight: 24.305
Density: 1.74
Class:
Earth-alkali metal
Melting point: 649°C
Boiling point: 1090°C
Colour: white shiny
   
Discoverer: Joseph Black
Place: Edinburgh
Year: 1808

Magnesium was recognized in 1755 by Joseph Black in Edinburgh, Scotland, and isolated by Sir Humphrey Davy in 1808 in London. Magnesium is a brilliant white metal, which is relatively soft. It is one of the more abundant elements, there being 23000 ppm in the earth's crust. As a powder, magnesium is extremely reactive, but as a solid it oxidises slowly in air and reacts slowly in water. It does not occur naturally, but is found in combination with other elements in minerals such as magnesite (MgCO3, primarily) and dolomite (the double carbonate of magnesium and calcium). As with other elements in groups 1 and 2 of the periodic table, it can be produced by electrolysis of the molten halide. Applications of magnesium include its use as a deoxidiser for copper, brass and nickel alloys and it is also added to several aluminum base alloys. It is the basis of strong, light alloys used in the aircraft and automobile industries (e.g. in engine assemblies). Alloys with zirconium and thorium have also been investigated for their use in aircraft manufacture. Pure magnesium can also be used as a sacrificial electrode to protect other metals.

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 Magnesium precision density-standard cube sealed under argon  Art. Nr. 005020  
Magnesium precision density-standard cube sealed under argon
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Magnesium precision density-standard cube 1cm3 sealed in ampoule under Argon! NEW!

Concerned about surface oxidation or scratches? In such a form the Mg cube will last forever and will not tarnish and the sensitive edges are protected. The cube does not move inside the ampoule.

Using finest materials, each density cube was lapped to 10x10x10mm by a mechanical engineering company with an accuracy of 0.01 millimeter. Each one separately ground and polished it represents the theoretical density of the respective element by its weight. The weight is not affected by the laser inscription. Information such as element symbol, name and density is durable burned at the surface. Each element even shows its specific characteristis in colour and reaction with the laser. Altogether 25 elements are planned in a complete set in a wooden case.

Amount: 1 St. / 1 pc..
Purity : ~99,7%
Packing: PE - bag
121.00
- tax free

Availability: 1 in stock

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