Aluminum Fluoride powder

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Aluminum Fluoride (AlF3)

Aluminum Fluoride Powder - AlF3

Purity --- 99.99% or International standards type

Shape --- Powder

Size --- 100mesh, 300mesh

Application --- raw material

Our Advantage

China rare metal material co.,limited (CRM) is an experter in manufacture Aluminum Fluoride Granule evaporation material . All Aluminum Fluoride Granule are manufacture by programs with with the highest possible density,high purity and smallest possible average grain size..

CRM material co.,limited is specialized in making various evaporation material . We have many raw material compounds line, such as semiconductor line, chemical compounds line, metallurgy line, powder milling line, etc. Moreover, we introduced many advanced technology and equipments from related companies at home and aborad. We also have an experienced research team who have developed many new and special sputtering targets, and also successfully made many trial orders and received many customers satisfaction and long-term friendship.

All Aluminum Fluoride Granule evaporation material are analyzed using best detection means including chemical analysis, Crystal phase microscope, x ray diffraction(XRD), X-Ray Fluorescence (XRF), Glow Discharge Mass Spectrometry (GDMS), and Inductively Coupled Plasma (ICP).

Aluminium Fluoride Base Information

Aluminum fluoride Aluminium fluoride (AlF3) is an inorganic compound used primarily in the production of aluminium. This colorless solid can be prepared synthetically but also occurs in nature.

Production and occurrence
The majority of aluminium fluoride is produced by treating alumina with hexafluorosilicic acid:

H2SiF6 + Al2O3 → 2 AlF3 + SiO2 + H2O
Alternatively, it is manufactured by thermal decomposition of ammonium hexafluoroaluminate.For small scale laboratory preparations, AlF3 can also be prepared by treating aluminium hydroxide or aluminium metal with HF.

Aluminium fluoride trihydrate is found in nature as the rare mineral rosenbergite.

Structure
Its structure adopts the rhenium trioxide motif, featuring distorted AlF6 octahedra. Each fluoride is connected to two Al centers. Because of its 3-dimensional polymeric structure, AlF3 has a high melting point. The other trihalides of aluminium in the solid state differ, AlCl3 has a layer structure and AlBr3 and AlI3, are molecular dimers. Also they have low melting points and evaporate readily to give dimers. In the gas phase aluminium fluoride exists as trigonal molecules of D3h symmetry. The Al-F bond lengths of this gaseous molecule are 163 pm.

Like most gaseous metal trifluorides, AlF3 adopts a planar structure upon evaporation.
Applications
Aluminium fluoride is an important additive for the production of aluminium by electrolysis. Together with cryolite, it lowers the melting point to below 1000 °C and increases the conductivity of the solution. It is into this molten salt that aluminium oxide is dissolved and then electrolyzed to give bulk Al metal.

Niche uses
Together with zirconium fluoride, aluminium fluoride is an ingredient for the production of fluoroaluminate glasses.

It is also used to inhibit fermentation.

Like magnesium fluoride it used as a low-index optical thin film, particularly when far UV transparency is required. Its deposition by physical vapor deposition, particularly by evaporation, is favorable.

Safety
AlF3 has low toxicity (LD50 600 mg/kg).

Other names: Aluminium(III) fluoride, Aluminum trifluoride

CAS Number：7784-18-1
ChEBI CHEBI:49464
ChemSpider： 2039
PubChem: 2124
RTECS number： BD0725000
Chemical formula：AlF3
Molar mass：83.9767 g/mol (anhydrous)
101.022 g/mol (monohydrate)
138.023 (trihydrate)

Appearance：white, crystalline solid odorless

Density：3.1 g/cm3 (anhydrous), 2.1 g/cm3 (monohydrate), 1.914 g/cm3 (trihydrate)

Melting point： 1,291 °C (2,356 °F; 1,564 K) (anhydrous) (sublimes)
Solubility in water：
0.56 g/100 mL (0 °C)
0.67 g/100 mL (20 °C)
1.72 g/100 mL (100 °C)

Crystal structure：Rhombohedral, hR24
Space group：R-3c, No. 167
EU classification (DSD)： No classification according to EU Regulation (EC) No. 1272/2008.