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na3alf6 5325min cryolite,a3AlF6: Chemical composition and properties of sodium aluminum fluoride

a3AlF6: Chemical composition and properties of sodium aluminum fluoride

a3AlF6, also known as sodium aluminum fluoride, is an inorganic compound with the formula a3AlF6. It is a white powder with low solubility in water.

Applications and advantages

a3AlF6 is mainly used as a flux in the aluminum smelting industry. It helps to reduce the operating temperature of the aluminum electrolyzer and improve the purity of aluminum. a3AlF6 is also used as an additive in the glass and ceramic industries, as well as in the preparation of other fluoride compounds.

Chemical characteristics

a3AlF6 is an ionic compound composed of sodium ion (a) and fluoroaluminate ion ([AlF6]3-). It is a weak base that hydrolyzes in water to produce sodium hydroxide (aOH) and hydrogen fluoride (HF).

Physical characteristics

a3AlF6 is a white powder with a melting point of 1012 °C and a boiling point of 1270 °C. It has a density of 3.15 g/cm3 and a refractive index of 1.41.

Security and handling

a3AlF6 is classified as corrosive. It can irritate the skin, eyes and respiratory tract. Wear appropriate personal protective equipment when handling.


a3AlF6 is an important inorganic compound in the aluminum and glass industries. Its chemical and physical properties make it an ideal additive for these applications.


Sodium aluminum fluoride


Aluminium smelting

Glass and ceramics