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Tantalum
Pentoxide
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Synonyms:
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Tantalum(V) oxide, Ditantalum pentaoxide
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CAS Number
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1314-61-0
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Chemical formula
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Ta2O5
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Molar mass
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441.893 g/mol
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Appearance
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white, odorless powder
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Density
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β-Ta2O5 = 8.18 g/cm3, α-Ta2O5 = 8.37 g/cm3
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Melting point
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1,872 °C (3,402 °F; 2,145 K)
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Solubility in water
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negligible
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Solubility
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insoluble in organic solvents and most mineral acids, reacts
with HF
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Band gap
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3.8–5.3 eV
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Magnetic susceptibility (χ)
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−32.0×10−6 cm3/mol
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Refractive index (nD)
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2.275
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High Purity Tantalum Pentoxide Chemical Specification
Symbol
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Ta2O5(%min)
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Foreign
Mat.≤ppm
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L.O.I
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Size
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Nb
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Fe
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Si
|
Ti
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Ni
|
Cr
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Al
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Mn
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Cu
|
W
|
Mo
|
Pb
|
Sn
|
Al+Ka+Li
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K
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Na
|
F
|
|
UMTO4N
|
99.99
|
30
|
5
|
10
|
3
|
3
|
3
|
5
|
3
|
3
|
5
|
5
|
3
|
3
|
|
2
|
2
|
50
|
|
0.20%
|
-60
|
|
UMTO3N
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99.9
|
3
|
4
|
4
|
1
|
4
|
1
|
2
|
10
|
4
|
3
|
3
|
2
|
2
|
5
|
|
|
50
|
|
0.20%
|
0.5-2µ
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Packing :In iron drums with inner sealed double plastic
What is Tantalum Oxides and Tantalum Pentoxides used for?
Tantalum Oxides are used as a base ingredient for lithium tantalate substrates required for the surface acoustic wave (SAW) filters used in:
• mobile phones, • as a precursor for the carbide, • as an additive to increase the refractive index of optical glass, • as a catalyst, etc., while niobium oxide is used in electroceramics, as a catalyst, and as an additive to glass, etc.
As a high reflective index and low light absorption material, Ta2O5 has been used in optical glass, fiber, and other instruments.
Tantalum pentoxide (Ta2O5) is used in the production of lithium tantalate single crystals. These SAW filters made of lithium tantalate are used in mobile end devices such as smartphones, tablet PCs, ultrabooks, GPS applications and smart meters.
