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Thermo Scientific™ Tungsten Trioxide 99+% (WO₃)
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Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | Thermo Fisher Scientific™ | ||
| Product Grade | Analytical grade | Formula | O₃W |
Thermo Scientific™ Tungsten Trioxide (WO₃) is a high-purity (≥99%) inorganic compound supplied as a fine yellow to yellow-green powder. It is primarily used in catalysis, electrochromic coatings, ceramics, sensors, and advanced material synthesis.
Due to its chemical stability and semiconducting properties, tungsten trioxide is ideal for photocatalytic, electrochemical, and gas-sensing applications. Its consistent purity and defined particle structure make it suitable for research laboratories, industrial R&D, and high-performance manufacturing processes.
Chemical Information
| Property | Details |
|---|---|
| Chemical Name | Tungsten Trioxide |
| Synonyms | Tungsten(VI) oxide, Tungstic anhydride |
| Chemical Formula | WO₃ |
| Molecular Weight | 231.84 g/mol |
| CAS Number | 1314-35-8 |
| MDL Number | MFCD00011466 |
| EINECS | 215-231-4 |
| Merck Index | 12,09947 |
| Storage Temperature | Ambient |
| Hazard Classification | Irritant |
Physical and Chemical Properties
| Property | Value |
|---|---|
| Appearance | Yellow to yellow-green powder |
| Purity (Assay) | ≥99.0 % |
| Density (20 °C) | 7.16 g/cm³ |
| Melting Point | 1470–1475 °C |
| Solubility | Insoluble in water; soluble in alkalis and acids |
| Grade | Analytical / Research Grade |
| Stability | Chemically stable under normal conditions |
Applications
- Catalyst precursor in oxidation, polymerization, and hydrogenation reactions.
- Semiconducting material for electrochromic and gas-sensing devices.
- Pigment and coating material for ceramics and glass industries.
- Raw material in tungsten metal and tungsten carbide production.
- Photocatalytic and electrochemical research reagent.
- Component in energy storage, solar, and optical coating technologies.
Safety and Handling
Hazard Statements:
- Causes skin and eye irritation.
- Avoid inhalation of dust or prolonged exposure.
- Use only with appropriate ventilation.
Precautions:
- Handle using gloves, goggles, and protective clothing.
- Avoid release to the environment.
- Dispose of residues according to local hazardous waste regulations.
Hazard Classification: Irritant
Recommended PPE: Lab gloves, goggles, protective coat.
Packaging and Ordering Information
| Catalog Number | Packaging Type | Pack Size | Container |
|---|---|---|---|
| 214211000 | Plastic bottle | 100 g | For solids |
| 214215000 | Plastic bottle | 500 g | For solids |
Storage and Stability
- Store at ambient temperature, tightly closed and protected from moisture.
- Stable under standard laboratory and industrial conditions.
- Shelf life: ≥3 years if properly stored.
Thermo Scientific™ Tungsten Trioxide (WO₃) is a high-purity tungsten(VI) oxide suitable for catalytic, electrochemical, and material science research. Its excellent thermal stability, purity, and color consistency make it a versatile reagent for laboratory use, semiconductor fabrication, and optical coating development.
- Pack Size: 100g 500g