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Aluminum fluoride

Description Synthesis Application Toxicological studies Safeties References
Aluminum fluoride
Aluminum fluoride structure
Chemical Name:
Aluminum fluoride
metals basi;fluoridhlinity;Trifluoroalumane;ALUMINUM FLUORIDE;ALUMNIUM FLUORIDE;ALF3(LOW DENSITY);ALUMINIUM FLUORID;Trifluoroaluminum;aluminiumfluorure;Aluminiumfluoride1
Molecular Formula:
Formula Weight:
MOL File:

Aluminum fluoride Properties

Melting point:
1290 °C (lit.)
Boiling point:
1291 °C
3.1 g/mL at 25 °C (lit.)
Flash point:
Sparingly soluble in acids and alkalies. Insoluble in Acetone.
White to light gray
Specific Gravity
Water Solubility 
1250 ºC
CAS DataBase Reference
7784-18-1(CAS DataBase Reference)
EWG's Food Scores
NIST Chemistry Reference
Aluminum trifluoride(7784-18-1)
EPA Substance Registry System
Aluminum trifluoride (7784-18-1)
  • Risk and Safety Statements
Hazard statements  H302-H315-H318-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Hazard Codes  Xn,T,Xi
Risk Statements  22-36/37/38
Safety Statements  26-37/39
RIDADR  3260
WGK Germany  1
RTECS  BD0725000
Hazard Note  Highly Toxic/Irritant
HazardClass  8
PackingGroup  III
HS Code  28261210

Aluminum fluoride price More Price(16)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 449628 Aluminum fluoride anhydrous, powder, 99.8% trace metals basis 7784-18-1 10g $118 2021-03-22 Buy
Sigma-Aldrich 449628 Aluminum fluoride anhydrous, powder, 99.8% trace metals basis 7784-18-1 50g $413 2021-03-22 Buy
Alfa Aesar 011497 Aluminum fluoride, anhydrous, 99+% 7784-18-1 10g $82.5 2021-03-22 Buy
Alfa Aesar 011497 Aluminum fluoride, anhydrous, 99+% 7784-18-1 1g $19 2021-03-22 Buy
Strem Chemicals 13-0075 Aluminum fluoride, anhydrous, 99+% 7784-18-1 10g $70 2021-03-22 Buy

Aluminum fluoride Chemical Properties,Uses,Production


Aluminum fluoride is in the form of white crystalline solid or a white powder. It occurs naturally as minerals rosenbergite and oskarssonite.1 It can also be prepared synthetically.


Aluminum fluoride are produced by methods in the following:
1) Fluosilicic acid with aluminum hydroxide2
H2SiF6 + 2 Al(OH)3 → 2 AlF3 + SiO2 + 4 H2O (I) 
The reaction is exothermal and proceeds in several steps. It can be described by the following three reactions:
3H2SiF6 + 2 Al(OH)3 → Al2(SiF6)3 + 6 H2O (II)
Al2(SiF6)3 + 6 H2O → 2 AlF3 + 3 SiO2 + 12 HF (III) 
12 HF + 4 Al(OH)3 → 4 AlF3 + 12 H2O 
The reaction is carried between 70°C and 100°C. The concentration of fluosilicic acid can be as high as 35 wt% in a water solution. As the produced aluminum fluoride solution is metastable and the trihydrate begins to crystalize out quickly at temperature around 90°C, precipitated solid silica must be removed as quickly as possible.
2) Al2O3 with aqueous hydrofluoric acid3

Hydrofluoric acid is added dropwise under vigorous stirring at room temperature into Al2O3 suspension. Subsequently the solid oxide is completely dissolved. The resulting clear solution is stirred for days at room temperature. During this period, the white solid precipitates are separated from the solvent, washed with water, and consequently dried. After treatment in a muffle furnace at the desired calcination temperature, aluminum fluoride is obtained.
3) Aluminum alkoxide with non-aqueous HF solution4
Aluminum alkoxide, Al(OR)3 (R = Me, Et, iPr, or tBu), reacts with non-aqueous HF solution in an organic solvent. The reaction is carried in a sol-gel state.  After aging, a solid is formed which settles. The solid is separated by centrifugation and dried under vacuum. Gas phase fluorination of the dried gel is then applied to obtain aluminum fluoride.


Aluminum fluoride is one of the most important additives in the industrial production of aluminum. The usage of aluminum fluoride can lower the melting point of cryolite and better the physical and chemical properties of the electrolyte. In the aluminum production, aluminum oxide is dissolved in a solution of cryolite. By passing an electrical current through the solution, aluminum is produced. Nevertheless, cryolite solution melts at about 1000°C. When aluminum fluoride is added, electrolysis can happen in the cryolite solution at a temperature 40-60°C lower, reducing the required amount of energy to produce aluminum.5 Aluminum fluoride is used as a barrier layer to retard oxidation of aluminum mirrors.6 It is used as a flux in ceramic glazes and enamels, in the manufacture of aluminum silicate, and as a catalyst.
Aluminum fluoride complexes with proteins can be used to study the mechanistic aspects of phosphoryl transfer reactions in biology, which are of fundamental importance as phosphoric acid anhydrides such as ATP and GTP control most of the reactions involved in metabolism, growth and differentiation.8  
Aluminum fluoride, together with zirconium fluoride, is used to produce fluoroaluminate glasses. In agriculture, aluminum fluoride can be used to inhibit fermentation. Physical vapor deposited aluminum fluoride can be used as a low index optical thin film in situations when far UV transparency is required.1 

Toxicological studies

Oral animal lethal dose (LD50) of aluminum fluoride is 0.1 g/kg. Aluminum fluoride is less toxic than most fluorides due to its slight water solubility. Exposure to high concentration of aluminum fluoride causes hypocalcemia. Inhalation and ingestion of aluminum fluoride result in typical symptoms of fluoride poisoning. Symptoms of severe poisoning include shortness of breath, congestion of the lungs, muscle spasm, and convulsions.8 Acute (short-term) toxic effects may include the death of animals, birds, or fish and death or low growth rate in plants. Acute effects are observed in 2 to 4 days after exposure of animals or plants to aluminum fluoride. Chronic (long-term) toxic effects may include shortened life span, reproductive problems, lower fertility, and changes in appearance or behavior in exposed animals.


Aluminum fluoride is a non-combustible solid. But it is incompatible with many other commodities including chemically active metals (e.g. potassium and sodium), acid, and acid fumes. Contact can cause fire or explosion. Upon heating, toxic fumes of fluoride, including extremely toxic hydrogen fluoride, can be emitted.


  2. John Karlström, Reactor Model for Production of Aluminum Fluoride
  3. W. Kleist, C. Häßner, O. Storcheva, K. Köhler, A simple aqueous phase synthesis of high surface area aluminum fluoride and its bulk and surface structure, Inorganica Chimica Acta, 2006, vol. 359, pp. 4851-4854
  4. S. K. Ruediger, U. Groß, M. Feist, H A. Proscott, S. C. Shekar, S. I. Troyanov, E. Kemnitz, Non-aqueous synthesis of high surface area aluminum fluoridea mechanistic investigation, Journal of Materials Chemistry, 2005, vol. 15, pp. 588-597
  6. R. Elaish, M. Curioni, K. Gowers, A. Kasuga, H. Habazaki, T. Hashimoto, P. Skeldon, Elelctrochimica Acta, 2017, vol. 245, pp. 854-862
  7. Alfred Wittinghofer, Signaling mechanistics: Aluminum fluoride for molecule of the year, 1997, vol. 7, pp. R682-R685
  8. Jeffrey Wayne Vincoli, Risk Management for hazardous Chemicals, Bund 1, 1996, ISBN 1-56670-200-3

Chemical Properties

Aluminum fluoride is a white, odorless powder or granule.

Chemical Properties

Aluminum fluoride, AlF3, is an anhydrous crystalline powder with a melting point of 1291 "C. Aluminum fluoride (hydrated), AlF3·31/2H20, is a white crystalline powder that is insoluble in water.


Production of aluminum to lower the melting point and increase the conductivity of the electrolyte, flux in ceramic glazes and enamels, manufacture of aluminum silicate, catalyst.


Aluminum fluoride is used to produce lowmelting aluminum metal, as a flux in ceramic glazes and white enamels, and as a catalyst in chemical reactions.

General Description

Odorless white powder or granules. Denser than water. Solubility in water at 25°C equals 0.559 g / 100 mL.

Air & Water Reactions

Slightly soluble in water

Reactivity Profile

Aluminum fluoride when heated to sublimation condition, emits toxic fumes of fluoride [USCG, 1999].


Strong irritant to tissue.

Health Hazard

ACUTE: respiratory irritation; possible nose bleeding or vomiting; CHRONIC: aggravates bronchitis/asthma; increased bone density.

Fire Hazard

Special Hazards of Combustion Products: When heated to sublimation condition, emits toxic fumes of fluoride

Safety Profile

A poison by ingestion. Moderately toxic by subcutaneous route. A severe eye irritant. Violently impact-sensitive when in contact with Na and K. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES and ALUMINUM COMPOUNDS.

Potential Exposure

Used as component of electrolyte from which aluminum metal is produced; in the manufacture of ceramics, enamels, aluminum silicate; as flux in metallurgy; as a fermentation inhibitor


UN3260 Corrosive solid, acidic, inorganic, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name Required. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.


Reacts violently with potassium or sodium

Waste Disposal

Neutralize with soda ash; add slaked lime; let stand for 24 hours. Transfer sludge to sewage facility.

Aluminum fluoride Preparation Products And Raw materials

Raw materials

Preparation Products

Aluminum fluoride Suppliers

Global( 251)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22607 55
career henan chemical co
+86-371-86658258 CHINA 29961 58
City Chemical LLC
203.937.8400 United States 97 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28229 58
Cangzhou Wanyou New Material Technology Co.,Ltd
18631714998 CHINA 914 58
Hubei xin bonus chemical co. LTD
027-59338440 CHINA 23035 58
Shandong chuangyingchemical Co., Ltd.
18853181302 CHINA 5917 58
Chongqing Chemdad Co., Ltd
+86-13650506873 CHINA 37282 58
Zhuozhou Wenxi import and Export Co., Ltd
+8613111626072 (WhatsApp)
Wechat: +8613111626072 Wickr me: waynehu CHINA 13187 58
Zhengzhou Alfa Chemical Co.,Ltd
+86 13343822234;;; CHINA 11790 58

View Lastest Price from Aluminum fluoride manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-08-11 Aluminum fluoride
US $48.00 / KG 1g 99.9% 500000kgs Shijiazhuang tongyang Import and Export Co., LTD
2021-07-13 Aluminum fluoride
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd
2021-07-10 Aluminum fluoride
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd

Aluminum fluoride Spectrum

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