Tantalum (V) oxide (Ta2O5 or tantalum pentoxide) is a white, stable solid compound. The powder is produced by precipitating a tantalum containing acid solution, filtering the precipitate, and calcining the filter cake.  It is often milled to the desirable particle size to meet various application requirements.
  • Order(MOQ):

  • Product Detail

Tantalum Pentoxide
Synonyms: Tantalum(V) oxide, Ditantalum pentaoxide
CAS Number 1314-61-0 
Chemical formula Ta2O5
Molar mass 441.893 g/mol
Appearance white, odorless powder
Density β-Ta2O5 = 8.18 g/cm3, α-Ta2O5 = 8.37 g/cm3
Melting point 1,872 °C (3,402 °F; 2,145 K)
Solubility in water negligible
Solubility insoluble in organic solvents and most mineral acids, reacts with HF
Band gap 3.8–5.3 eV
Magnetic susceptibility (χ) −32.0×10−6 cm3/mol
Refractive index (nD) 2.275

High Purity Tantalum Pentoxide Chemical Specification

Ta2O5(%min) Foreign Mat.≤ppm
L.O.I Size 
Nb Fe Si Ti Ni Cr Al Mn Cu W Mo Pb Sn Al+Ka+Li K 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 99.9 3 4 4 1 4 1 2 10 4 3 3 2 2 5 50 0.20% 0.5-2µ

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. 

Get A Quote
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Related Products
high purity Hexammine Cobalt(3) Chloride
Hexaamminecobalt(III) Chloride
A cobalt coordination entity consisting of a hexaamminecobalt(III) cation in association with three chloride anions as counterions.
high grade Tellurium Ingot
Tellurium Metal Ingot
UrbanMines supplies metallic Tellurium Ingots with the highest possible purity. Ingots are generally the least costly metallic form and useful in general applications.  We also supply Tellurium as rod, pellets, powder, pieces, disc, granules, wire, and in compound forms, such as oxide. Other shapes are available by request.
high grade niobium oxides
Niobium Oxide, sometimes called columbium oxide, at UrbanMines refer to Niobium Pentoxide (niobium(V) oxide), Nb2O5. Natural niobium oxide is sometimes known as niobia.
High quality gallium oxide
Gallium Oxide
Gallium Oxide is a technologically important semiconductor material and has been utilized in various applications, such as high-temperature …
high grade Lanthanum chloride
Lanthanum(III) Chloride
Lanthanum(III) Chloride Heptahydrate is an excellent water soluble crystalline Lanthanum source, which is an inorganic compound with the formula LaCl3. It is a common salt of lanthanum which is mainly used in research and compatible with chlorides. It is a white solid that is highly soluble in water and alcohols.
high gradeTellurium Dioxide Powder
Tellurium Dioxide Powder
Tellurium Dioxide, has the symbol TeO2 is a solid oxide of tellurium. It is encountered in two different forms, the yellow orthorhombic mineral tellurite, ß-TeO2, and the synthetic, colourless tetragonal (paratellurite), a-TeO2.
high purity cobaltous chloride
Cobaltous Chloride
Cobaltous Chloride (CoCl2∙6H2O in commercial form), a pink solid that changes to blue as it dehydrates, is utilized in catalyst preparation and as an indicator of humidity.
high grade Cerium(III) Carbonate
Cerium(III) Carbonate
Cerium(III) Carbonate Ce2(CO3)3, is the salt formed by cerium(III) cations and carbonate anions. It is a water insoluble Cerium source that can easily be converted to other Cerium compounds, such as the oxide by heating (calcin0ation). Carbonate compounds also give off carbon dioxide when treated with dilute acids.
Get A Quote
welcome to UrbanMines
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.