What is the material of cryolite(Na3alf6)?
Cryolite(Na3alf6) is a salt of sodium aluminium hexafluoride. It is represented as Na3AlF6. It consists of Aluminium, Sodium and Fluorine.
Properties of Cryolite(Na3alf6)
- Cryolite occurs in a monoclinic crystal state.
- The cryolite is whitish glassy in colour.
- The hardness of cryolite in the moh scale is 2.5 to 3.
- The specific gravity of cryolite is 2.95 to 3.
- Cryolite is transparent to translucent to transparent in nature due to which its refractive index is very low.
- Cryolite is invisible in nature, due to a similar refractive index.
- Cryolite as the essential component of the electrolyte (85 – 90 %) decreases the temperature of the smelting flux electrolysis.
| GB/T 4291-2017 | |||||
| CH-0 | CH-1 | CM-0 | CM-1 | ||
| 52.0 | 52.0 | 53.0 | 53.0 | 53.5 | |
| 12.0 | 12.0 | 13.0 | 13.0 | 12.7 | |
| 33.0 | 33.0 | 32.0 | 32.0 | 32.5 | |
| Si02(<=) | 0.25 | 0.36 | 0.25 | 0.36 | 0.2 |
| Fe2O3(<=) | 0.03 | 0.05 | 0.05 | 0.08 | 0.02 |
| SO42- (<=) | 0.50 | 0.80 | 0.50 | 0.80 | 0.75 |
| 0.10 | 0.15 | 0.20 | 0.60 | 0.05 | |
| P2O5(<=) | 0.02 | 0.03 | 0.02 | 0.03 | 0.03 |
| 0.20 | 0.40 | 0.20 | 0.40 | 0.17 | |
| 1.5 | 2.5 | 2.0 | 2.5 | 1.5 | |
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