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Synthetic Cryolite

Cryolite, or sodium hexafluoroaluminate, is a white free flowing chemical compound which a cube-like crystals consisting of aluminium  3+ cations binding to six fluoride  F- anions, forming octahedral AlF63-, and smaller sodium + ions balance the charge to give Na3AlF6, or 3NaF.AlF3. 


Most important uses of cryolite is used as with extraction agent of Aluminium metal from its ore Bauxite by electrolyse aluminium. In 1886, both Charles Hall in Ohio, US, and Paul Héroult in Normandy, France, discovered that molten cryolite, with the moderate melting temperature of only 1012°C, easily dissolves aluminium oxide.  Thus the Hall-Héroult process was born, still in use today.


The name cryolite stems from the Greek words for cold, "cryo" and stone, "lithos", Cryolite in mineral form was mined in Ivittuu in Greenland. The Ivittuu mine was depleted in 1987 and today only synthetic cryolite is used in the production of aluminium. Most commonly this artificial cryolite is obtained from calcium fluoride, also known as the mineral fluorspar, sodium carbonate and aluminium hydroxide, in a multi step process.


Synthetic Cryolite

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Our company has achieved expertise in the sphere of manufacturing of sodium cryolite. It is also known as synthetic cryolite, sodium aluminum fluoride, sodium hexafluoroaluminate, ice spar and kryolith. We SB Chemicals is a leading Sodium Cryolite manufacturer and supplier. It has the following specifications:

NamesSodium Aluminum Fluoride, Sodium Hexafluoroaluminate, Ice Spar, Kryolith, Sodium Cryolite, Synthetic Cryolite
CAS No.15096-53-2
UN No.N.A.
ParametersLimits (%)
Loss on drying at 110 ºC0.20 Max
Sodium as Na31 - 34 %
Aluminium as Al13 - 15 %
Purity as Na3AlF698.0 MIN.
Alumina as Al2O31.00 % max
Ratio NaF / AlF3 by mass1.3 - 1.45
Silica as SiO20.20 Max.
Phosphorus as P2O50.01 Max.
Iron as Fe2O30.10 Max.
Physical Properties
Molecule Weight209.94
AppearanceAn Off white to pinkish tinge granular material
Melting Point1012 ºC
Density at 20 ºC2.85 g/cc
Bulk Density0.9 - 1.2 g/cc
Packaging25 Kg / 50 Kg in HDPE bags with liners. 1 MT in big jumbo bags
SafetySafety precautions & additional information are available in the our MSDS
ApplicationsAs an electrolyte in production of Aluminum

Additional Information:

  • Pay Mode Terms: L/C (Letter of Credit),D/A,T/T (Bank Transfer),Other
  • Packaging Details: 25 Kg in plastic woven bags with liner, or 1000 Kg in Jumbo bags
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