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01713

Sigma-Aldrich

Cryolite

synthetic, ≥97.0% (from F)

Synonym(s):

Kryolith, Sodium hexafluoroaluminate

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About This Item

Linear Formula:
Na3AlF6
CAS Number:
15096-52-3
Molecular Weight:
209.94
MDL number:
MFCD00003507
UNSPSC Code:
12161600
PubChem Substance ID:
57646698
NACRES:
NA.22

Quality Level

100

Assay

≥97.0% (from F)

form

powder

quality

synthetic

reaction suitability

core: aluminum
reagent type: catalyst

impurities

≤0.5% silicic acid (as SiO2)

loss

≤0.5% loss on drying, 105 °C

cation traces

Fe: ≤500 mg/kg

storage temp.

2-30°C

SMILES string

[Na+].[Na+].[Na+].F[Al-3](F)(F)(F)(F)F

InChI

1S/Al.6FH.3Na/h;6*1H;;;/q+3;;;;;;;3*+1/p-6

InChI key

REHXRBDMVPYGJX-UHFFFAOYSA-H

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Application

Cryolite is commonly used as an electrolyte for aluminum electrolysis. Alumina is dissolved in molten cryolite is used to dissolve alumina during aluminium processing.

Signal Word

Danger

Hazard Statements

H332,H372,H411

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 2 - STOT RE 1

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCJ2923
BCCG1180
BCCD8438
BCCD1905
BCCB8145

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Solubility of aluminum in cryolite-based melts.
Danielik V, et al.
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 41(2), 430-436 (2010)
R K Bansal et al.
The Journal of prosthetic dentistry, 73(2), 210-213 (1995-02-01)
Zinc oxide, the inorganic component of polycarboxylate cement, was mixed with the filler cryolite (Na3A1F6) in various proportions that ranged from 10% to 50%. These powder combinations were mixed with polyacrylic acid in three powder-to-liquid ratios of 1:1, 1.5:1, and
S Gelsomino et al.
The Journal of heart valve disease, 10(5), 603-610 (2001-10-18)
Left ventricular (LV) hypertrophy has been shown adversely to affect LV function and late outcome after aortic valve replacement (AVR). The study aim was to assess the time course of LV mass regression (LVMR) after AVR with a CryoLife-O'Brien stentless
T D Grekhova et al.
Meditsina truda i promyshlennaia ekologiia, (8)(8), 20-23 (1994-01-01)
Efficiency of glutamic acid for therapy of early signs of occupational fluorosis was studied in workers engaged into cryolite production. The study proved that use of glutamic acid in occupational conditions prevents progressing of metabolic disorders. The results encourage recommendations
G A Valova et al.
TSitologiia i genetika, 28(3), 56-59 (1994-05-01)
Dermatoglyphic investigations which prove the existence of genetic predisposition to occupational fluorosis in workers of aluminum and criolite plants were carried out. Mathematical methods of pattern recognition were used for the multifactorial analysis. It was found that the complex analysis
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