Potassium heptafluorotantalate
- CAS number
- 16924-00-8
- Molecular weight
- 392.13
- Molecular formula / chemical symbol
- K2TaF7
Description
An inorganic compound with the formula K2TaF7. This white, water-soluble solid is an intermediate in the purification of tantalum from its ores and is the precursor to the metal.USES
Colorless orthorhombic system, usually white needle crystal. Melting point 520 ℃ relative density 4.56 solubility slightly soluble in cold water, hydrofluoric acid, soluble in hot water, also used as catalyst, reagent.Can be used for making metal tantalum and other tantalum
compound
Report
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K2TaF7 |
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392.13 g/mol |
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Appearance |
white solid |
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4.56 g/mL at 25°C |
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630-820°C |
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Solubility in water |
0.5 g/100 mL (15 °C)[1] |
Inspection test results
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potassium heptafluorotantalate |
CAS：16924-00-8 |
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Character |
white needle crystal |
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Test items |
Values |
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Ta2O5 |
≥55.5—56.5％ |
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C |
0.002％ |
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Fe |
0.001％ |
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Ni |
0.001％ |
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Cr |
0.001％ |
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Nb |
0.002％ |
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Si |
0.002％ |
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Cu |
0.001％ |
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W |
0.001％ |
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Mo |
0.001％ |
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Mg |
0.001％ |
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Ti |
0.001％ |
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Ca |
0.001％ |
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Pb |
0.001％ |
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H2O |
0.03％ |
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