Molecular Formula: Na3AlF6 Molecular Weight: 209.94
CAS No.: 13775-53-6
Cryolite is a mineral, sodium hexafluoroaluminate (Na3AlF6), white monoclinic (1009 degrees Celsius), slightly soluble in water, molten cryolite can dissolve alumina, used as a flux in the electrolytic aluminum industry, Opacifier for the manufacture of opalescent glass and enamel
Specification:
| Item |
Specification |
| Na3AlF6 |
92% Min. |
| F |
52% Min. |
| Al |
12% Min. |
| Na |
33% Max. |
| P2O5 |
0.03% Max. |
| SiO2 |
0.5% Max. |
| Fe2O3 |
0.1% Max. |
| SO42- |
0.5% Max. |
| H2O |
0.4% Max. |
Charasters
Colorless monoclinic crystals, often grayish white, reddish, yellowish, or black due to impurities. Relative density 2.9-3.0, melting point 1000°. Slightly soluble in water, aqueous solution is acidic. Decomposition of sulfuric acid releases toxic gas.
Usage: It is mainly used as a flux in the aluminium smelting by fused salt electrolysis; also an opalizer in the manufacture of enamel; an opacifier and auxiliary solvent of glass and enamel; an insecticide of crops; a flux in aluminium alloy casting; and in the production of ferrous alloy and effervescing steel.
Packing: Net each in 25kg plastic woven bag, lined with PE bag. and etc. you can choose the way you like.
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