Synthetic Cryolite
Sodium Hexafluoroaluminate
- CAS
- 13775-53-6
- EC
- 237-410-6
- Sectors
- Mining & Metals, Agriculture
Synthetic Cryolite (CAS 13775-53-6), also known as sodium hexafluoroaluminate, is a white crystalline salt of the Salts & Minerals class that fluxes at 1000°C to dissolve alumina in the Hall-Héroult process and is used in aluminum smelting electrolytes, abrasive wheels, insecticides, vitreous enamels and fireworks.
SoleChem, an ISO 9001:2015 certified chemical supplier based in Türkiye, delivers Synthetic Cryolite (CAS 13775-53-6) to customers in more than 40 countries.
Typical Properties
| Molecular formula | AlF6.3Na |
|---|---|
| Molecular weight | 209.94 g/mol |
| Form | Crystals |
| Color | White |
| Melting point | 1009 °C |
| Density | 1.941 g/cm³ |
| Water solubility | Sparingly soluble in water(0.602 g/L at 20°C). |
| GHS signal word | Danger · Irritant / harmful, Health hazard, Environmental hazard |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Applications by Industry
- Mining & Metals
Synthetic Cryolite serves aluminum smelters as a fluxing agent in Hall-Héroult electrolytes, where it dissolves alumina at 1000°C, and is also used in abrasive wheels for bonding.
- Agriculture
Synthetic Cryolite acts as a stomach poison in insecticide formulations applied to protect crops from chewing pests.
Synthetic Cryolite
Applications
In aluminum smelting electrolytes; in abrasive wheels for bonding; in insecticides as stomach poisons; in vitreous enamels; and in fireworks for green flames.
Safety & Risks
Fluoride ions release toxic skeletal fluorosis chronic. Aquatic persistent; use HF-resistant PPE and calcium gluconate for exposures.
Packaging
Packaged in 50 kg fiber-reinforced plastic barrels. Store in fluoride-safe dry zones.