Tungsten trioxide CAS1314-35-8 O3W CI 77901
7 Inquiries
1314-35-8
Industrial Grade
99%
Shanghai
Atomixchem
bag
2026-09-14
Hydroquinone,Dichloromethylsilane,Dichlorodimethylsilane
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceTungsten trioxide (WO₃), also known as tungsten(VI) oxide, is a yellow crystalline solid with notable physical and chemical properties. It has a density of approximately 7.16 g/cm³ and exhibits polymorphism, undergoing structural transitions at various temperatures: tetragonal above 740°C, orthorhombic between 330°C and 740°C, monoclinic from 17°C to 330°C, triclinic between -50°C and 17°C, and reverting to monoclinic below -50°C. The compound is insoluble in water but slightly soluble in hydrofluoric acid. It can be synthesized through the calcination of ammonium paratungstate (APT) under oxidizing conditions, yielding WO₃ along with the release of ammonia and water vapor. Basic Info
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Product Name:
Tungsten trioxide
Other Name:CI 77901;TUNGSTEN TRIOXIDE 99.999%;TUNGSTEN TRIOXIDE, 99.5%;Tungsten(VI)oxide(99.9994%-W)PURATREM;Tungsten(VI)oxide(min.99.8%-W);Tungsten(VI)oxide,sinteredlumps(99.99%-W)PURATREM;tungsten(vi) oxide, puratronic;TUNGSTENOXIDE,POWDER
CAS No.:1314-35-8
Molecular Formula:O3W
InChIKeys:ZNOKGRXACCSDPY-UHFFFAOYSA-N
Molecular Weight:231.84
Exact Mass:231.93600
EC Number:215-231-4
TSCA:TSCA listed
DSSTox ID:DTXSID7032262
Color/Form:Yellow to greenish-yellow
HScode:28259012
Categories:
Characteristics-
PSA:
51.21000
Physical Properties:Heavy yellow powder; turns dark orange on heating; reverts back to yellow on cooling; density 7.2 g/cm3; melts at 1,472°C; insoluble in water; slightly soluble in acids; soluble in caustic alkalies.
XLogP3:-0.35640
Appearance:Yellow powder
Density:7.16 g/mL at 25 °C(lit.)
Melting Point:1470-1475 °C
Boiling Point:1837°C (estimate)
Water Solubility:insoluble
Storage Conditions:Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Toxicity:rat,LD50,oral,1059mg/kg (1059mg/kg),BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)BEHAVIORAL: EXCITEMENTBEHAVIORAL: MUSCLE WEAKNESS,Hygiene and Sanitation Vol. 31(7-9), Pg. 197, 1966.
Flammability characteristics:Not classified
Critical Temperature & Pressure:Room Temperature
Hazard IdentificationClassification of the substance or mixture
Not classified.
GHS label elements, including precautionary statements
Pictogram(s) No symbol. Signal word No signal word
Hazard statement(s) none
Precautionary statement(s) Prevention none
Response none
Storage none
Disposal none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
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Seller Information
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Business Type:
Trader
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Main Products:
Hydroquinone,Dichloromethylsilane,Dichlorodimethylsilane
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Location:
No.933,9th floor,office building,jinan new materials industry zone,jinan city,shandong province,,china
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Payment Terms:
TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance
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Total Employees:
11-50
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Year of Establishment:
2023
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Certifications:
ISO9001
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Inquiry History7 Inquiries
Country Product Purchase Quantity Date Posted 
Netherlands
Tungsten Trioxide
100 G Apr 24, 2026 
United Kingdom
Tungsten trioxide
100 MT Jan 14, 2026 
France
Tungsten Oxide Nano Powder
3000 PCS Nov 4, 2025 
Spain
tungsten oxide
876600 KG Dec 6, 2024 
United States
Tungsten Trioxide
1300 KG Nov 25, 2024 
Zambia
tungsten trioxide
2 KG Aug 13, 2026
Netherlands
Tungsten trioxide
100 G Apr 23, 2026 Post an enquiry for this product
