Tantalum Pentoxide

Ta₂O₅

IUPAC: Tantalum(V) oxide

CAS: 1314-61-0

Overview

Tantalum pentoxide is a high-dielectric material used in electronic capacitors and as an anti-reflective coating for camera lenses. It is extremely chemically resistant and is used in high-end electronics where miniaturization requires thin, high-capacitance layers.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 5 15.9990
Tantalum Ta 2 180.9500

Elemental Composition

O
Oxygen ×5
18.1%
Ta
Tantalum ×2
81.9%

Uses

  • • Electronic capacitor dielectric
  • • Anti-reflective lens coating
  • • High-k gate dielectric
  • • Optical coating

Fun Facts

  • ✦ Found in virtually every smartphone and laptop as capacitor dielectric material

Safety

  • ⚠ Low toxicity

Structure

SMILES

[O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5]

Properties

Type
oxide
State
solid
Molar Mass
441.89 g/mol
Density
8.2000 g/cm³
Melting Point
1872.0 °C
Solubility
insoluble

Molecular Descriptors

Exact Mass
441.8706
TPSA
5.0 Ų
H-Bond Donors
0
H-Bond Acceptors
5
Rotatable Bonds
0
Heavy Atoms
7
Complexity
0.0

Also Known As

Tantalum pentoxide

Related Compounds

Aluminum Oxide

Al₂O₃

Antimony Trioxide

Sb₂O₃

Barium Oxide

BaO

Beryllium Oxide

BeO

Bismuth(III) Oxide

Bi₂O₃

Boron Trioxide

B₂O₃

Cadmium Oxide

CdO

Calcium Oxide

CaO

Carbon Dioxide

CO₂

Carbon Monoxide

CO

Frequently Asked Questions

What is Tantalum Pentoxide?
Tantalum Pentoxide (Ta₂O₅) is a oxide compound with the IUPAC name Tantalum(V) oxide.
What is the molecular weight of Tantalum Pentoxide?
Tantalum Pentoxide has a molar mass of 441.893 g/mol.
What state is Tantalum Pentoxide at room temperature?
Tantalum Pentoxide is a solid at room temperature.
Is Tantalum Pentoxide organic or inorganic?
Tantalum Pentoxide is classified as an inorganic compound.
What elements make up Tantalum Pentoxide?
Tantalum Pentoxide (Ta₂O₅) is composed of Oxygen (O), Tantalum (Ta).