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Tantalum Oxide (Ta2O5) Powder, CAS 1314-61-0


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Tantalum Oxide Powder typically denotes tantalum pentoxide, a white, colorless crystalline powder. It represents the most prevalent tantalum oxide and is the end product of tantalum combustion in air. Heeger Materials provides premium Tantalum Oxide Powder of exceptional quality and competitive pricing, with customizable particle sizes.

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Data sheet

Particle Size20 mesh to 500 mesh/Customized
Molecular WeightTa2O5
Purity99.9%, 99.99%, 99.999%

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Tantalum Oxide (Ta2O5) Powder, also referred to as Ditantalum Pentaoxide, Tantalum Oxide Dust, and Tantalum Pentaoxide, is insoluble in water and acids (except hydrofluoric acid), and exhibits chemical similarities with niobium oxide. It is primarily utilized in the growth of lithium tantalate single crystals and the production of specialized optical glass characterized by high refractivity and low dispersion. Furthermore, it can also function as a catalyst.

Tantalum Oxide (Ta2O5) Powder, CAS 1314-61-0

  • Molecular weight: 441.89
  • Melting point: 1872 ℃
  • Density: 8.2 g/cm3

Tantalum Oxide Powder Specifications

Item No.

Particle Size (FSSS)

Purity (Impurities in Oxides)


 0.5~2 µm

Ta2O5 > 99.9% (metals basis), Nb < 0.005%, Fe < 0.005%, Si < 0.002% Ti < 0.002%, Ni < 0.002%, W < 0.003%


 1~3 µm

Ta2O5 > 99.99% (metals basis), Nb < 10 ppm, Fe < 10 ppm, Si < 10 ppm Ti < 3 ppm, Ni < 3 ppm, W < 5 ppm


 1~3 µm

Ta2O5 > 99.999% (metals basis), Nb < 2 ppm, Fe < 3 ppm, Si < 3 ppm Ti < 1 ppm, Ni < 1 ppm, W < 2 ppm

Tantalum Oxide Powder SEM

Tantalum Oxide (Ta2O5) Powder SEM

Tantalum Oxide Powder Applications

  • Used as a raw material for producing metallic tantalum.
  • Used in the electronics industry.
  • Used for pulling lithium tantalate single crystals.
  • Used for manufacturing special optical glass with high refraction and low dispersion.
  • Used as a catalyst in the chemical industry.

Tantalum Oxide Powder Packing

Tantalum Oxide (Ta2O5) Powder should be stored in a sealed container in a dry and cool place, and should not be exposed to air for an extended time. HM offers vacuum-sealed packaging including 100g/bag, 500g/bag, 1kg/bag, and 25kg/drum, or customized packaging as per specific requirements.

Tantalum Oxide Powder, Ta2O5 Powder Packing

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