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.
Product Price :Get Latest PriceOur 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:
|Names||Sodium Aluminum Fluoride, Sodium Hexafluoroaluminate, Ice Spar, Kryolith, Sodium Cryolite, Synthetic Cryolite|
|Loss on drying at 110 ºC||0.20 Max|
|Sodium as Na||31 - 34 %|
|Aluminium as Al||13 - 15 %|
|Purity as Na3AlF6||98.0 MIN.|
|Alumina as Al2O3||1.00 % max|
|Ratio NaF / AlF3 by mass||1.3 - 1.45|
|Silica as SiO2||0.20 Max.|
|Phosphorus as P2O5||0.01 Max.|
|Iron as Fe2O3||0.10 Max.|
|Appearance||An Off white to pinkish tinge granular material|
|Melting Point||1012 ºC|
|Density at 20 ºC||2.85 g/cc|
|Bulk Density||0.9 - 1.2 g/cc|
|Packaging||25 Kg / 50 Kg in HDPE bags with liners. 1 MT in big jumbo bags|
|Safety||Safety precautions & additional information are available in the our MSDS|
|Applications||As an electrolyte in production of Aluminum|
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