| CRYOLITE | ||
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PRODUCT IDENTIFICATION |
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| CAS NO. | 15096-52-3 |
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| EINECS NO. | 239-148-8 | |
| FORMULA | AlF6Na3 | |
| MOL WT. | 209.94 | |
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H.S.CODE |
2826.30 |
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| TOXICITY | Oral rat LD50: 5gm/kg | |
| SYNONYMS | Sodium Aluminofluoride; Sodium Hexafluoroaluminate; | |
| Aluminum Sodium Fluoride; Kryolith; ice spar; Kryocide; Sodium Aluminum Fluoride; Sodium Fluoroaluminate; Sodium fluoaluminate; Kryolith; Natriumaluminiumfluorid; Natriumhexafluoroaluminate ; Trinatriumhexafluoroaluminat (German); Hexafluoroaluminato de trisodio (Spanish); Hexafluoroaluminate de trisodium (French); | ||
| SMILES | ||
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | pink or brown tinted granular or powder | |
| MELTING POINT | 1000 C | |
| BOILING POINT | ||
| SPECIFIC GRAVITY | 2.95 | |
| SOLUBILITY IN WATER | ||
| pH | ||
| FLASH POINT | ||
| NFPA RATINGS | ||
| STABILITY | Stable under ordinary conditions | |
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DESCRIPTION OF CRYOLITE |
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Cryolite is a white or colorless mineral form of sodium aluminofluoride, which crystallizes in the monoclinic system but has a pseudocubic aspect; found in masses of waxy luster; hardness is 2.5 on Mohs scale, and specific gravity is 3.0. The powder becomes almost invisible in water due to its low refractive index. It is mined in significant quantities in Greenland ( so also known as Greenland spar; ice stone), and in small amounts in elsewhere. Synthetic cryolite is manufactured from hydrofluoric acid, sodium carbonate, and aluminium. Synthetic cryolite is used chiefly as a flux in the electrolytic production of aluminum from bauxite as it effectively lowers down the melting point of alumina. It is used in the glass and enamel industries, in bonded abrasives as a filler, in making salts of sodium and aluminum and porcelaneous glass and in the manufacture of insecticides. Cryolite is a relatively safe fruit and vegetable insecticide. The fluoride ion inhibits many enzymes that contain iron, calcium, and magnesium. Several of these enzymes are involved in energy production in cells, as in the case of phosphatases and phosphorylases. |
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APPLICATIONS |
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| solvent for bauxite in the electrolytic production of aluminum; other metallurgical applications; glass and enamel industries; filler for bonded abrasives; in the manufacture of insecticides. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
pink or brown tinted granular | |
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F CONTENT |
53.0% min |
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| Al CONTENT | 12 - 15% | |
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Na CONTENT |
30 -34% |
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| SO3 | 0.5% max | |
| SiO2 | 0.2% max | |
| P2O5 |
0.01% max |
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| Fe2O3 | 0.10% max | |
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Al2O3 |
1.0% max |
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MOISTURE |
0.20% max |
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LOSS ON IGNITION |
0.5% max |
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| TRANSPORTATION | ||
| PACKING | 25kgs, 50kgs, 1mt in Bag | |
| HAZARD CLASS | ||
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| REMARKS | ||
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