Tungsten Trioxide

CAS No.:	1314-35-8
Linear Formula:	WO3
Material:	Pure Tungsten
Purity:	≥ 99.95%
Appearance:	Light yellow crystallized powder
Particle Size:	8 µm ~ 25 µm (Normal), 0.8 ~2.5 µm (Superfine BET≥3 m2/g)
Apparent Density:	1.5g/cm3 ~ 3.0 g/cm3 (Normal), ≤1.0 g/cm3 (Superfine)

 

Product Description

Tungsten Trioxide (WO₃) is a fine yellow powder with high purity, excellent chemical stability, and superior optical properties. It is widely used in the production of tungsten metal, electrochromic materials, gas sensors, and smart glass coatings. Due to its photocatalytic properties and high-temperature resistance, WO₃ is also utilized in ceramic pigments, catalysis, and radiation shielding applications.

WO₃ is an essential precursor for producing metallic tungsten and tungsten-based compounds, making it a critical material in metallurgy, energy storage, and nanotechnology.

 

---

 

Features & Properties

✔ High Purity – Available in 99.95% to 99.99% purity for specialized applications
✔ Excellent Optical Properties – Used in smart glass, solar cells, and gas sensors
✔ Photocatalytic Activity – Enhances energy efficiency in coatings & environmental applications
✔ High Thermal Stability – Withstands extreme temperatures & chemical environments
✔ Electrochromic Functionality – Used in smart windows & display technologies
✔ Corrosion Resistance – Ideal for chemical and industrial applications

 

---

 

Product Standards

ISO 9001:2015 – Quality Management System Certified

RoHS & REACH Compliance – Environmentally safe & non-toxic

 

---

 

Product Forms

Nano Tungsten Trioxide Powder (High Surface Area)

Micron Tungsten Trioxide Powder (Industrial Applications)

Spherical WO₃ Powder (Enhanced Flowability for Coatings)

WO₃ Granules (For Metallurgical Applications)

 

---

 

Production Method & Production Equipments

Production Method

Tungsten Trioxide (WO₃) is synthesized via the following steps:

Tungsten Ore Processing – Tungsten concentrates are extracted from ores.

Chemical Precipitation – Ammonium Paratungstate (APT) is processed into WO₃.

Calcination – APT is heated in an oxidizing environment to form WO₃ powder.

Purification & Milling – The powder is refined and milled to desired particle sizes.

Production Equipments

Rotary Kilns & Furnaces – For high-temperature calcination

Ball Milling Machines – To produce fine WO₃ powder

X-ray Diffraction (XRD) Equipment – For phase analysis

Laser Particle Size Analyzer – To ensure precise particle size distribution

 

---

 

Applications & Related Industries

🔹 Tungsten Metal & Alloys – Used as a precursor for W powder & sintered tungsten parts
🔹 Smart Glass & Electrochromic Coatings – WO₃ enables light-adjusting windows
🔹 Catalysts & Gas Sensors – Enhances catalytic efficiency & gas detection
🔹 Radiation Shielding – Used in medical & nuclear shielding applications
🔹 Solar Energy Storage – Utilized in solar panels & energy-efficient devices
🔹 Pigments & Ceramics – A vital colorant for ceramic glazes & industrial coatings

 

---

 

Synonyms

Yellow Tungsten Oxide (YTO)

Tungsten(VI) Oxide

Tungsten Oxide Powder

WO3 Nanoparticles

 

---

 

Health & Safety Information

Toxicity: Non-toxic, but prolonged exposure to fine dust may cause respiratory irritation.

Handling Precautions: Use protective gear such as gloves, masks, & safety goggles when handling.

Storage: Store in a cool, dry place, away from moisture & incompatible materials.

 

---

 

Interesting Facts About Tungsten Trioxide

🔹 Used in NASA Technology – WO₃ coatings are used in aerospace applications.
🔹 Smart Glass Revolution – Electrochromic WO₃ allows windows to change transparency based on voltage.
🔹 Plays a Key Role in Hydrogen Energy – WO₃ is widely used in hydrogen storage & fuel cells.

 

---

 

Why Choose Us for Tungsten Trioxide (WO₃)?

✅ High-Purity WO₃ – Meeting the highest industry standards
✅ Custom Particle Sizes – From nano to micron-sized powders
✅ Strict Quality Control – Advanced testing & certification
✅ Fast & Secure Global Shipping – Serving customers worldwide

 

---

 

Contact Us for Custom Tungsten Trioxide Solutions

Need customized WO₃ powder for your specific industry? Contact us today for expert guidance & competitive pricing!

 

Tungsten Ttrioxide Chemical Composition

Main Content (%): WO3 ≥ 99.95%
Other Contents (%) ≤	Al	0.0008	As	0.001	Bi	0.0001
	Ca	0.001	Cd	0.0001	Co	0.0005
	Cr	0.0005	Cu	0.0003	Fe	0.001
	K	0.001	Mg	0.0005	Mn	0.0005
	Mo	0.002	Na	0.001	Ni	0.0005
	P	0.0007	Pb	0.0001	S	0.0007
	Sb	0.0001	Si	0.001	Sn	0.0002
	Ti	0.0005	V	0.0005	---	---

Chemical Identifiers

Linear Formula	WO3
MDL Number	MFCD00049709
EC No.	234-842-7
Beilstein/Reaxys No.	N/A
Pubchem CID	N/A
IUPAC Name	Oxygen(2-); tungsten
SMILES	O=[W](=O)=O
InchI Identifier	InChI=1S/3O.W
InchI Key	ZNOKGRXACCSDPY-UHFFFAOYSA-N

Tungsten Trioxide Properties (Theoretical)

Compound Formula	WO3
Molecular Weight	231.85
Appearance	Yellow Powder
Melting Point	1473 °C (2683 °F)
Boiling Point	1700 °C ( 3092 °F)
Density	7.16 g/cm3
Solubility in H2O	Insoluble
Crystal Phase / Structure	Monoclinic
Exact Mass	231.936 g/mol
Monoisotopic Mass	231.935644 Da
Charge	-6

 

Hot Tags: tungsten trioxide, China, suppliers, buy, for sale, made in China