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Ge
Germanium
Atomic no.:	32
Atom. weight:	72.59
Density:	5.32
Class:	semi metal
Melting point:	937.4°C
Boiling point:	2830°C
Colour:	grey shiny

Discoverer:	C.A. Winkler
Place:	Freiberg, Germany
Year:	1886
Discovered in 1886 by C.A. Winkler at Freiberg, Germany. Germanium is a silvery white brittle metalloid member of the carbon group of elements, its physical properties being similar to those of silicon, the element which precedes it in the group. Other elements within the carbon group are relatively common, but germanium is found only in trace amounts in some coals and as a minor component in some ores, the principle one being argyrodite, a double sulfide of silver and germanium (the mineral from which germanium was first isolated). It has an abundance within the Earth's crust of 1.8 ppm and the element is produced by reduction of the oxide, ultra-high purity material being obtained by zone refining (a process in which the element is formed into a rod which is then heated at one end to produce a narrow molten zone. The heater is moved along the length of the rod so that the molten zone travels from one end of the rod to the other. Impurities are more soluble in the molten metal than in the solid and thus concentrate in the liquid zone as it moves to one end of the rod). Germanium is stable in air and water and is unaffected by alkalis and acids, with the exception of nitric acid. It is a poor conductor of electricity but has exceptional properties as a semiconductor material and it is in this area where germanium is primarily used. However, other applications for the material include its use as an alloying element in the production of specific alloys and as an addition to glass in the manufacture of infrared devices. Views: 63387

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	ampoules			Cubes			Acrylic blocks			All categories

$1.5 grams germanium fractures 99.999% polycrystalline$ 1.5 grams germanium fractures 99.999% polycrystalline Amount: 1.5g Purity :99.999% 1 pcs.: 17.00 Euro - tax free 5-9 pcs.: 16.00 Euro >9 pcs.: 15.00 Euro Details	Germanium - precision density-standard cube 1cm3 NEW! Amount: 1 St. / 1 pc.. Purity :99,999% 1 pcs.: 87.00 Euro - tax free Details	Acrylic Element-block Germanium Ge - 50mm NEW! Amount: 1 St. Purity :99.999% 1 pcs.: 78.00 Euro - tax free Details	$Mini ampoule Germanium fractures under Argon 0.65 gram$ Mini ampoule Germanium fractures under Argon 0.65 gram Amount: ca. 0.65g Purity :99.999% 1 pcs.: 13.00 Euro - tax free 5-9 pcs.: 12.00 Euro >9 pcs.: 12.00 Euro Details
single crystalline Germanium disc 99.9999% ~62 grams Amount: ~62g Purity :99.9999% 1 pcs.: out of stock! Details	High purity fine Germanium powder >99.999% purity 5 grams Amount: 5g Purity :>99.999% 1 pcs.: out of stock! Details	Acrylic Element-block Germanium Ge - 50mm NEW! Amount: 1 St. Purity :99.999% 1 pcs.: out of stock! Details	Acrylic Element-block Germanium Ge - 50mm NEW! Amount: 1 St. Purity :99.999% 1 pcs.: out of stock! Details
High purity zone refined single crystalline Germanium 7.56g Amount: 7.56g Purity :99,9999% 1 pcs.: out of stock! Details	Poly crystalline Germanium - zone refined 745 grams 99.999% Amount: 745.90 Purity :99.999% 1 pcs.: out of stock! Details	Acrylic Element-block Germanium Ge - 50mm NEW! Amount: 1 St. Purity :99.999% 1 pcs.: out of stock! Details	Acrylic Element-block Germanium Ge - 50mm NEW! Amount: 1 St. Purity :99.999% 1 pcs.: out of stock! Details
Poly crystalline Germanium - zone refined 948 grams 99.999% Amount: 948 grams Purity :99.999% 1 pcs.: out of stock! Details

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