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 grade Lanthanum hydroxide Hydrate
Lanthanum Hydroxide
Lanthanum Hydroxide is a highly water insoluble crystalline Lanthanum source, which can be obtained by adding an alkali such as ammonia to aqueous solutions of lanthanum salts such as lanthanum nitrate.   This produces a gel-like precipitate that can then be dried in air. Lanthanum hydroxide does not react much with alkaline substances, however is slightly soluble in acidic solution. It is used compatibly with higher (basic) pH environments. 
high grade Samarium Oxide
Samarium(III) Oxide
Samarium(III) Oxide is a chemical compound with the chemical formula Sm2O3. It is a highly insoluble thermally stable Samarium source suitable for glass, optic and ceramic applications. Samarium oxide readily forms on the surface of samarium metal under humid conditions or temperatures in excess of 150°C in dry air. The oxide is commonly white to off yellow in color and is often encountered as a highly fine dust like pale yellow powder, which is insoluble in water.
high quantity ITO powder
Indium Tin Oxide Powder
Indium Tin Oxide (ITO) is a ternary composition of indium, tin and oxygen in varying proportions.   Tin Oxide is a solid solution of indium(III) oxide (In2O3) and tin(IV) oxide (SnO2) with unique properties as a transparent semiconductor material.
high quality germanium oxide
Germanium Dioxide
Germanium Dioxide, also called Germanium Oxide and Germania, is an inorganic compound, an oxide of germanium. It forms as a passivation layer on pure germanium in contact with atmospheric oxygen.
AR Grade Bismuth Nitrate
Bismuth Nitrate
Bismuth(III) Nitrate is a salt composed of bismuth in its cationic +3 oxidation state and nitrate anions, which the most common solid form is the pentahydrate. It is used in the synthesis of other bismuth compounds.
high grade Tungsten Rod&Powder
Tungsten Rod&Powder
Tungsten Rod is pressed and sintered from our high purity tungsten powders. Our pure tugnsten rod has 99.96% tungsten purity and 19.3g/cm3 typical density. We offer tungsten rods with diameters ranging from 1.0mm to 6.4mm or more. Hot isostatic pressing ensures our tungsten rods obtain a high density and fine grain size. Tungsten Powder is mainly produced by the hydrogen reduction of high-purity tungsten oxides. UrbanMines is capable of supplying tungsten powder with many different grain sizes. Tungsten powder has often been pressed into bars, sintered and forged into thin rods and used to create bulb filaments. Tungsten powder is also used in electrical contacts, airbag deployment systems and as the primary material used to produce tungsten wire. The powder is also used in other automotive and aerospace applications.
high grade Nickel Carbonate
Nickel Carbonate
Nickel Carbonate is a light green crystalline substance, which is a water insoluble Nickel source that can easily be converted to other Nickel compounds, such as the oxide by heating (calcination).
high grade tungsten oxide
Tungsten Trioxide Powder
Tungsten(VI) Oxide, also known as tungsten trioxide or tungstic anhydride,  is a chemical compound containing oxygen and the transition metal tungsten. It is soluble in hot alkali solutions. Insoluble in water and acids. Slightly soluble in hydrofluoric acid.
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.