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Cr
Chromium
Atomic no.:
24
Atom. weight: 51.996
Density: 7.1
Class:
Heavy metal
Melting point: 1857°C
Boiling point: 2672°C
Colour: silvery shiny
   
Discoverer: N.L. Vanquelin
Place: Paris, France
Year: 1780

Discovered in 1780 by N.L. Vanquelin in Paris, France. Chromium is a bright, blue/white metal with excellent corrosion resistance. It is obtained by the aluminum reduction of Cr2O3, the source of which is chromite, a double oxide of chromium and iron which generally also contains magnesium. It has an abundance within the earth's crust of approximately 100 ppm. Chromium is soluble in HCl and H2SO4, but not in H3PO4, HNO3 or HClO4 due to the formation of a stable and insoluble oxide layer on its surface; this, along with its hardness, has been used to advantage in the chromium plating of steel which has good corrosion resistance. Chromium is alloyed with nickel in the manufacture of heat resisting alloys, and with iron, or nickel and iron, to produce stainless and heat resistant steels. Chromium is an important trace element for humans as it assists in the manufacture of glucose.

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 150 grams Chromium Metal beads 99.9% purity  Art. Nr. 004229  
150 grams Chromium Metal beads 99.9% purity
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Pure chromium metal beads 99.9% purity 150 grams - in taper joint glass bottle.

 

Size of the bottle: H = 85mm x D = 41mm
The bottle will be shipped in vacuum sealed foil.

 

These highly shiny Chromium beads are ideal for your element collection or for lab use.

Size: 8 - 12mm

 

CAS: 7440-47-3   MDL: MFCD00010944   EINECS: 231-157-5

 

Amount: 250g
Purity : 99.95%
Packing: vacuum bag
100.00
- tax free

Availability: 3 in stock

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