Cryolite powder CAS NO 15096-52-3 worked as solvent (or flux) for
electrolysis of aluminium oxides
►Description
1. Cryolite is one kind of odorless white solid or powder. The IUPAC Name of this chemical is
trisodium;hexafluoroaluminum(3-). This chemical belongs to the product categories which is
inorganics. It’s slightly soluble in water, but insoluble in anhydrous hydrogen fluoride.
2. Cryolite is the inorganic compound with the formula Na3AIF6 . This white solid,
discovered by the Brazilian José Bonifácio de Andrada e Silva, occurs naturally as
the mineral cryolite and is used extensively in the industrial production of aluminium
metal. The compound consists of the sodium (Na+) salt of hexafluoroaluminate
(AlF63−).
3. Most cryolite is manufactured from aluminium oxides, hydrofluoric acid, and
sodium hydroxide or the equivalent reagent hexafluorosilicic acid:
6 NaOH + Al2O3 + 12 HF → 2 Na3AlF6 + 9 H2O
It was mined as cryolite at Ivigtût on the west coast of Greenland, until the deposit
was depleted in 1987.
4.Cryolite is poorly soluble in water, which mitigates problems. The LD50 = 600
mg/kg for the comparable compound aluminium trifluoride.
5:Structure
Smiles: [Al+3]([F-])([F-])([F-])([F-])([F-])[F-].[Na+].[Na+].[Na+]
InChI: InChI=1S/Al.6FH.3Na/h;6*1H;;;/q+3*+1/p-6
InChIKey: REHXRBDMVPYGJX-UHFFFAOYSA-H
Canonical SMILES: F[Al-3](F)(F)(F)(F)F.[Na+].[Na+].[Na+]
►Specification
Macro molecule
| Na3AlF6 | Item | Specification |
| Na3AlF6 | 98% |
| F | 53.5% |
| Al | 13.8% |
| Na | 31.2% |
| SiO2 | 0.28% |
| Fe2O3 | 0.03% |
| SO4 | 0.01% |
| Hygroscopic moisture | 0.17% |
| Cauterant decrease | 1.85% |
| Molecular proportion | 2.65% |
Low molecule
| Na3AlF6 | Item | Specification |
| Na3AlF6 | 98% |
| F | 53.4% |
| Al | 14.6% |
| Na | 30.5% |
| SiO2 | 0.25% |
| Fe2O3 | 0.03% |
| SO4 | 0.01% |
| Hygroscopic moisture | 0.15% |
| Cauterant decrease | 1.27% |
| Molecular proportion | 2.46% |
►Application
1. The main application of synthetic cryolite is as a solvent (or flux) for electrolysis
of aluminium oxides such as bauxite. The conversion of aluminium oxides into
metallic aluminium requires that the metal ions be dissolved so that they can accept
the electrons provided in the electrolysis cell. A mixture of cryolite and some
aluminium trifluoride is that solvent. Unlike typical solutions, this one requires
temperatures approaching 1000 °C to melt.
2.cryolite is also used as a pesticide.
►Payment
T/T 30% deposit ,70% paid against copy B/L
►MOQ
1-25ton
Product Tags:
|
|
Reliable Sodium Aluminum Fluoride 209.94 Molecular Weight 98% Purity Images
|
