CAS number : 7789-24-4
Molecular weight :25.94
Molecular formula/chemical symbol :LiF
Description :
Lithium fluoride is an inorganic compound with the formula LiF. It is the lithium salt of hydrofluoric acid. This white solid is a simple ionic compound. Its structure is analogous to that of sodium chloride, but it is much less soluble in water. It is mainly used as a component of molten salts. Formation of LiF releases one of the highest energy per mass of reactants, only second to that of BeO.
LiF is prepared from lithium hydroxide and hydrogen fluoride or by dissolving lithium carbonate in excess hydrogen fluoride, evaporating to dryness and heating to red heat.
Lithium fluoride |
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IUPAC name[hide] Lithium fluoride |
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Identifiers |
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23007 Y |
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OJ6125000 |
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Jmol-3D images |
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[show] · [Li+].[F-] |
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[show]
·InChI=1S/FH.Li/h1H;/q;+1/p-1 Y
InChI=1/FH.Li/h1H;/q;+1/p-1 |
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Properties |
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LiF |
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25.939(2) g/mol |
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Appearance |
white
powder or transparent crystals, |
2.635 g/cm3 |
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845 °C, 1118 K, 1553 °F |
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1676 °C, 1949 K, 3049 °F |
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Solubility in water |
0.27 g/100
mL (18 °C)[1] |
Refractive index (nD) |
1.3915 |
Structure |
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Cubic |
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Linear |
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Thermochemistry |
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Std enthalpy of |
-616 kJ/mol |
Standard molar |
1.376 J/(g K) |
1.604 J/(g K) |
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Related compounds |
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Other anions |
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Other cations |
Sodium
fluoride |
Y (verify) (what is: Y/N?) |
Hazards
EU Index
025-002-00-9
Oxidant (O)
Harmful (Xn)
Dangerous for the environment (N)
Non-Flammable
Related compounds
Other anions
Potassium manganite
Potassium manganate
Other cations
Sodium permanganate
Ammonium permanganate
Related compounds
Y (verify) (what is: Y/N?)
Except where noted otherwise, data are given for materials in their standard
state (at 25 °C, 100 kPa)
USES :
Lithium fluoride (highly enriched in the common isotope lithium-7) forms the basic constituent of the preferred fluoride salt mixture used in liquid-fluoride nuclear reactors.
It is also used as a
means to record ionizing radiation exposure from gamma rays, beta
particles, and neutrons (indirectly, using the 6
3Li (n,alpha) nuclear reaction) in thermoluminescent dosimeters.
For enamel, glass, glaze and welding flux.
Keywords:Fine ceramics
Report :
Product name |
Lithium fluoride |
CAS:7789-24-4 |
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Description |
White powder |
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TEST ITEMS |
TEST RESULTS |
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LiF |
≥99.95% |
≥99.99% |
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Na |
≤0.003% |
≤0.001% |
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K |
≤0.0005% |
≤0.0005% |
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SO42- |
≤0.008% |
≤0.002% |
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Ca |
≤0.005% |
≤0.001% |
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Mg |
≤0.0005% |
≤0.0005% |
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Cl- |
≤0.0005% |
≤0.0003% |
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Si |
≤0.008% |
≤0.002% |
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Fe |
≤0.002% |
≤0.0005% |
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Al |
≤0.0005% |
≤0.0003% |
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Cu |
≤0.0005% |
≤0.0003% |