OX0023 Tantalum Pentoxide (Ta2O5) (CAS No. 1314-61-0)

Catalog No. OX0023
CAS Number 1314-61-0
Purity 99.9%, 99.99%
Formula Weight 441.98
Melting Point 1800 °C
Spec. Gravity 8.2 g/cm3
Lot Size 10kg, 50kg, 100kg

Tantalum Pentoxide (CAS No. 1314-61-0) is a tantalum compound and can be used in the production of lithium tantalate (LiTaO3) single crystals. Tantalum oxide (Ta2O5) is one of the most important transition metal oxides because of its extraordinary physical and chemical properties.

SAM is a trusted supplier and manufacturer of high-quality Tantalum Oxide Powder and various tantalum compounds including Tantalum Carbide Powder, Tantalum Silicide Powder, Capacitor Grade Tantalum Powder, and Metallurgical Grade Tantalum Powder.

Tantalum Pentoxide Description

Tantalum oxide (Ta2O5) is also known as Tantalum Pentoxide. Tantalum pentoxide powder can be used in the production of lithium tantalate (LiTaO3) single crystals. These single crystals are cut into wafers and are used as a substrate for manufacturing surface acoustic wave filters. These SAW filters made of lithium tantalate (LiTaO3) can be used in mobile end devices such as smartphones, tablet PCs, GPS applications, and smart meters.

Stanford Advanced Materials (SAM) can provide ultrapure tantalum pentoxides, which feature especially good flow characteristics due to their narrow grain size distribution. It can be used in the crystal industry. Our tantalum pentoxides also can be used in the production of sputtering targets, with which anti-reflective layers are applied to optical lenses using physical vapor deposition (PVD).


Tantalum Pentoxide Specifications

Product No.

Purity (Impurities in Oxides)

Lot Size


Ta2O5 > 99.9% (metals basis)
Nb < 0.005%, Fe < 0.005%, Si < 0.002%

Ti < 0.002%, Ni < 0.002%, W < 0.003%

10 kg
50 kg
100 kg


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

10 kg
50 kg
100 kg


Ta2O5 > 99.995% (metals basis)
Nb < 2 ppm, Fe < 3 ppm, Si < 3 ppm
Ti < 1 ppm, Ni < 1 ppm, W < 2 ppm

10 kg
50 kg
100 kg

Particle size: -60 mesh, -200 mesh, -325 mesh or customized
Special particle sizes can be customized upon your request.


Tantalum Pentoxide (Ta2O5) Powder 99.9%, -325mesh
Tantalum Pentoxide (Ta2O5) Powder 99.99%, D(50)<10 μm

Tantalum Pentoxide Applications

Tantalum Pentoxide Powder can be used in:

-Ferroelectric properties
-UV laser applications combined in multilayers with silicon dioxide
-film capacitors, as gate insulators in large-scale integrated circuits

Tantalum Pentoxide Packaging

Tantalum Pentoxide product is clearly tagged and labeled externally to ensure efficient identification and quality control. Great care is taken to avoid any damage which might be caused during storage or transportation.

packing packing

Material Safety Data Sheet for your reference


sc/1625644919-normal-Tungsten-Titanium-Tantalum Carbide Solid Solution Powder (WCTiCTaC).jpg

CA3523 Tungsten-Titanium-Tantalum Carbide Solid Solution Powder (WC/TiC/TaC)

sc/1625646001-normal-Tungsten-Titanium-Tantalum (Niobium) Carbide Solid Solution Powder (WCTiCTaC(Nb

CA3524 Tungsten-Titanium-Tantalum (Niobium) Carbide Solid Solution Powder (WC/TiC/TaC(NbC))

sc/1638784376-normal-Multilayer Tantalum Carbide.jpg

TA3826 Multilayer Tantalum Carbide (Ta2C)

sc/1666235126-normal-Potassium Heptafluorotantalate Powder.jpg

PK4442 Potassium Heptafluorotantalate Powder (CAS No. 16924-00-8)


CA4595 Spherical Tantalum Carbide (TaC) for thermal spraying


TS4650 Spherical Tantalum Disilicide (TaSi2) for thermal spraying


Please fill in your details and one of our material experts will get back to you within 24 hours. For more information, contact us via E-mail at sales@samaterials.com.

** Email address with your company's domain name is preferred. Otherwise, we may not be able to process your inquiry.

 Inquiry List