Caesium aluminium fluoride

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Caesium tetrafluoroaluminate
IUPAC name caesium fluoride—aluminium trifluoride (1/1)
Other names Caesium aluminium fluoride
Identifiers
InChI InChI=1/Al.Cs.4FH/h;;4*1H/q+3;+1;;;;/p-4
InChIKey UYFXWCIZFDKSTJ-XBHQNQODAD
Standard InChI InChI=1S/Al.Cs.4FH/h;;4*1H/q+3;+1;;;;/p-4
Standard InChIKey UYFXWCIZFDKSTJ-UHFFFAOYSA-J
CAS number [138577-01​-2]
ChemSpider 16409562
Properties
Chemical formula CsAlF4
Molar mass 235.88 g/mol
Melting point

420–450 ºC

Solubility in water approx. 1.2 g/100 ml (20 ºC)
Hazards
EU index number not listed
Flash point non-flammable
Related compounds
Other anions Caesium hexafluorosilicate
Other cations Lithium tetrafluoroaluminate
Sodium tetrafluoroaluminate
Potassium tetrafluoroaluminate
Rubidium tetrafluoroaluminate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Tricaesium nonafluorodialuminate
IUPAC name Caesium fluoride—aluminium trifluoride (3/2)
Other names Caesium fluoroaluminate (60:40)
Identifiers
InChI InChI=1/2Al.3Cs.9FH/h;;;;;9*1H/q2*+3;3*+1;;;;;;;;;/p-9
CAS number [138577-01​-2]
Properties
Chemical formula Cs3Al2F9
Molar mass 624 g/mol
Melting point

420–480 ºC

Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Caesium aluminium fluoride, is a mixed fluoride of caesium and aluminium: the formula CsAlF4, caesium tetrafluoroaluminate, corresponds to a 1:1 combination of caesium fluoride and aluminium fluoride. Other combinations are known, such as the 3:2 formulation Cs3Al2F9. These compounds are used as brazing fluxes, especially for aluminium–magnesium alloys.

References

External links

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