Tantalum powder Basic information
CAS:	7440-25-7
MF：	Ta
EINECS：	231-135-5
MW：	180.95
Boiling point：	5425°C
Purity：	99%
density	16.69g/cm³
Melting point：	2996°C
Sensitivity：	Humidity sensitive
Tantalum powder properties
Ta（%）	Bal
Ti（%）	≤0.001
Fe（%）	≤0.003
Mo（%）	≤0.001
Cr（%）	≤0.001
O（%）	≤0.04
Particle size distribution/（um）	15-53/45-106
Apparent density（g/cm³）	≥9.5
Tap density（g/cm³）	≥10.5
Hall flow rate （s/50g）	≤6.0

Tantalum corrosion：
Tantalum has a moderate hardness and is malleable, and can be drawn into a thin foil made of filament. Its thermal expansion coefficient is small. Tantalum has excellent chemical properties and extremely high corrosion resistance. It does not react to hydrochloric acid, concentrated nitric acid and "aqua regia" under both cold and hot conditions.
where is tantalum used？
Ta powder can be used to make evaporation vessels, etc. It can also be used as electrodes, rectifiers, electrolysis, and capacitors for electronic tubes. It is medically used to make thin sheets or threads to repair damaged tissue.

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