Indium oxide (In₂O₃) is an inorganic compound that typically appears as a yellowishgreen, odorless powder. It is also known as indium trioxide or indium sesquioxide. In₂O₃ is a stable, widebandgap semiconductor with useful electrical and optical properties, making it an important material in modern electronics.
Indium oxide is widely used in the semiconductor, display, and coating industries. One of its most important roles is as a key component in indium tin oxide (ITO), the transparent conductive material used in touchscreens, LCDs, OLEDs, and solar cells.
Key Applications
- Transparent conductive coatings (as part of ITO)
- Thinfilm materials for displays and optoelectronics
- Antistatic and infraredreflective coatings
- Battery materials, including advanced lithiumion systems
- Gas sensors, especially for detecting reducing gases
- Catalysts in organic and inorganic reactions
- Precursors for other indium compounds and semiconductor materials
Why In₂O₃ Is Valuable
- High optical transparency in the visible range
- Good electrical conductivity when doped
- Chemical and thermal stability
- Compatibility with thinfilm deposition techniques (sputtering, evaporation, solgel)
These properties make indium oxide essential for nextgeneration electronics, energy devices, and advanced coating technologies.
General Properties
| Properties | Value |
| Chemical formula | In2O3 |
| CAS # | 1312-43-2 |
| EC / EINECS # | 215-193-9 |
| Molar mass | 277.64 g/mol |
| Appearance | yellowish green |
| Melting point | 1,910 °C (3,470 °F; 2,180 K) |
| Boiling point | ~2000 °C |
| Density | 7.179 g/cm3 |
| Solubility in water | Insoluble |
| Solubility | Poorly soluble in all |
Product Availability
We provide high-purity Indium Oxide (In2O3) tailored for semiconductor and industrial requirements.
| Purity | 99.99% – 99.9999% (4N – 6N) |
| Forms | Powder |
| Particle Sizes | From -50 mesh to -325 mesh |
| Nanoparticle Sizes | From 30 nm to 100nm |
| Package | 1kg pack or up on request |
If you are in need of any high purity Indium Oxide (In2O3), please contact our sales team for details at sales@american-gmg.com.