Cesium Tetrafluoroaluminate

CAS #:

Linear Formula:


MDL Number:


EC No.:



(2N) 99% Cesium Tetrafluoroaluminate
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(3N) 99.9% Cesium Tetrafluoroaluminate
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(4N) 99.99% Cesium Tetrafluoroaluminate
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(5N) 99.999% Cesium Tetrafluoroaluminate
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Cesium Tetrafluoroaluminate Properties (Theoretical)

Compound Formula AlCsF4
Molecular Weight 235.88
Appearance White powder
Melting Point 420-480 °C
Boiling Point N/A
Density 3.3 g/cm3
Solubility in H2O N/A
Exact Mass 235.880603
Monoisotopic Mass 235.880603

Cesium Tetrafluoroaluminate Health & Safety Information

Signal Word Danger
Hazard Statements H318, H373, H412
Hazard Codes N/A
Risk Codes 25-34
Safety Statements 26-27-36/37/39-45
RTECS Number N/A
Transport Information UN 1759 8/PG 2
WGK Germany 3

About Cesium Tetrafluoroaluminate

Fluoride IonCesium Tetrafluoroaluminate is a water insoluble Cesium compound used as a flux for brazing aluminum and magnesium-containing aluminum alloys. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Cesium Tetrafluoroaluminate Synonyms

Cesium aluminium fluoride; Aluminium cesium fluoride; Cesium aluminium tetrafluoride; cesium tetrafluoroaluminate complex; cesium fluoroaluminate; Aluminate(1-), tetrafluoro-, cesium, (T-4)- (9CI); Cesium (T-4)-tetrafluoroaluminate(1-)

Chemical Identifiers

Linear Formula CsAlF4
MDL Number N/A
EC No. N/A
Beilstein/Reaxys No. N/A
Pubchem CID 16703277
IUPAC Name cesium; tetrafluoroalumanuide
SMILES [O-][Si]([O-])([O-])F.[O-][Si]([O-])([O-])F.[O-][Si]([O-])([O-])F.[O-][Si]([O-])([O-])F.[O-][Si]([O-])([O-])F.[O-][Si]([O-])([O-])F.[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+].[Cs+]
InchI Identifier InChI=1S/Al.Cs.4FH/h;;4*1H/q+3;+1;;;;/p-4

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Aluminum products. Aluminum (or Aluminium) (atomic symbol: Al, atomic number: 13) is a Block P, Group 13, Period 3 element with an atomic weight of 26.9815386. It is the third most abundant element in the earth's crust and the most abundant metallic element. Aluminum Bohr Model Aluminum's name is derived from alumina, the mineral from which Sir Humphrey Davy attempted to refine it from in 1812. Aluminum was first predicted by Antoine Lavoisier 1787 and first isolated by Hans Christian Øersted in 1825. Aluminum is a silvery gray metal that possesses many desirable characteristics. It is light, nonmagnetic and non-sparking. It stands second among metals in the scale of malleability, and sixth in ductility. It is extensively used in many industrial applications where a strong, light, easily constructed material is needed. Elemental AluminumAlthough it has only 60% of the electrical conductivity of copper, it is used in electrical transmission lines because of its light weight. Pure aluminum is soft and lacks strength, but alloyed with small amounts of copper, magnesium, silicon, manganese, or other elements, it imparts a variety of useful properties.


See more Cesium products. Cesium (or Caesium) (atomic symbol: Ce, atomic number: 55) is a Block S, Group 1, Period 6 element with an atomic weight of 132.9054519. The number of electrons in each of Cesium's shells is 2, 8, 18, 18, 8, 1 and its electron configuration is [Xe]6s1. Cesium Bohr ModelThe cesium atom has a radius of 265 pm and a Van der Waals radius of 343 pm. Cesium is a member of the alkali group of metals. It is one of three metals that occur as a liquid at room temperature, the others being mercury and gallium. Elemental CesiumCesium's main commercial source is pollucite ore; however, it is also found in beryl, avogadrite, pezzottaite, and londonite. Cesium was discovered by Robert Bunsen and Gustav Kirchhoff in 1860 and first isolated by Carl Setterberg in 1882. In its elemental form, cesium has a silvery gold appearance. The word Cesium originates from the Latin word "caesius," meaning "sky blue," which refers to the vibrant blue lines in its spectrum.


Fluorine is a Block P, Group 17, Period 2 element. Its electron configuration is [He]2s22p5. The fluorine atom has a covalent radius of 64 pm and its Van der Waals radius is 135 pm. In its elemental form, CAS 7782-41-4, fluorine gas has a pale yellow appearance. Fluorine was discovered by André-Marie Ampère in 1810. It was first isolated by Henri Moissan in 1886.


April 14, 2024
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