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Ga
Gallium


Atomic no.:
31
Atom. weight: 69.723
Density: 5.904
Class:
Metal
Melting point: 29.76°C
Boiling point: 2204°C
Colour: silvery shiny
   
Discoverer: Paul-Emile Lecoq de Boisbaudran
Place: France
Year: 1875

Discovered in 1875 by P.E. Lecoq de Boisbaudran in Paris, France. One of four metals which can be liquid at room temperature, gallium has the longest liquid range of any metal (2175C). Below its melting point, it is a hard, brittle, glassy, silvery white metal which is stable in both air and water. Gallium, along with indium and thallium which follow gallium in their group in the periodic table, is only found as a minor constituent of various minerals and has an abundance of 18 ppm in the earth's crust. Extraction of the element is achieved by electrolytic reduction in aqueous solution. Gallium is used in the semiconductor industry due to its semiconductor properties of alloys formed with phosphorus, arsenic and antimony. It is also used in the manufacture of light emitting diodes and microwave equipment. Before Gallium was discovered in 1875, its existence along with many of its physical and chemical properties were accurately predicted by Dimitri Mendeleev as a result of his work on the periodic table of the elements.

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 Gallium Indium Tin eutectic, 99.99% - liquid Metal 50 grams  Art. Nr. 003607  
Gallium Indium Tin eutectic, 99.99% - liquid Metal 50 grams
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Gallium Indium Tin eutectic, 99.99% - liquid Metal 50 grams

Ga:In:Sn; 69:22:9 wt%

This liquid is a family of eutectic alloys of gallium, indium, and tin which are liquid at room temperature, typically freezing at -19 °C (-2.2 °F). Due to the low toxicity and low reactivity of its component metals, it finds use as a replacement for many applications that previously employed toxic liquid mercury or reactive NaK (sodium-potassium alloy).

It tends to wet and adhere to many materials, including glass, which limits its use compared to mercury. Ga In Sn liquid is commercially used as a mercury replacement in thermometers due to its nontoxic properties, but the inner tube must be coated with gallium oxide to prevent the alloy from wetting the glass surface.

It has higher reflectivity and lower density than mercury; it is investigated as a replacement of mercury in liquid mirror telescopes for astronomy. It is also a promising coolant, though its cost and aggressivity (it corrodes many other metals by dissolving them) are major obstacles for its use. Small amounts have begun to be sold as thermal grease to computer enthusiasts; it has a much better heat conductivity compared to more standard thermal pastes (allowing hot chips such as CPUs and GPUs to run several degrees cooler), but needs to be applied more carefully than the electrically isolating standard greases, since spills can cause short circuits.

 

Amount: 50g
Purity : 99,99%
Packing: PE-Box
149.00 Euro
- tax free
5-9 pcs.: 142.00 Euro
>9 pcs.: 134.00 Euro
Stock quantity: 45 available

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