Tungsten(VI) oxide
- CAS Number
- 1314-35-8
- HSN Code
- 28259090
- Molecular Formula
- WO3
- Catalogue Number
- AL1548B
- Purity
- ≥ 98%
- Molecular Weight
- 231.85 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Tungsten(VI) oxide, also known as tungsten trioxide, is a stable inorganic compound with the molecular formula WO3. It is characterized by its pale yellow to green powder form and is primarily utilized as a precursor in the synthesis of tungsten catalysts and in the development of electrochromic materials. With a high purity grade of 98%, it is suitable for various industrial applications, particularly in advanced materials research and development. Tungsten trioxide is notable for its unique properties, including its ability to change color when an electric charge is applied, making it valuable in smart window technologies.
Also known as Tungsten trioxide.
- Catalogue No.
- AL1548B
- CAS Number
- 1314-35-8
- Molecular Formula
- WO3
- Molecular Weight
- 231.85 g/mol
- HSN Code
- 28259090
- Grade
- 98%
- Product Form
- Substance
Tungsten(VI) oxide appears as a pale yellow to green powder. It has a melting point of approximately 1473 °C and a boiling point of 1500 °C. The density of tungsten trioxide is about 7.16 g/cm³. It is insoluble in water, which limits its use in aqueous environments but makes it suitable for solid-state applications. The compound exhibits a low vapor pressure, indicating its stability at room temperature. Its chemical stability and inertness under normal conditions make it a reliable material for various applications.
- Appearance
- Pale yellow to green powder
- Shelf Life
- -
- Packaging
- -
- Storage
- Store in a cool, dry place away from incompatible materials.
1.1 — Product identifier
- Chemical Name
- Tungsten(VI) oxide
- Catalogue No.
- AL1548B
- Product form
- Substance
- CAS Number
- 1314-35-8
- EC Number
- 215-227-2
- Grade
- 98%
- EC Index Number
- Not specified
- Chemical Formula
- WO3
- HSN Code
- 28259090
- Synonyms
- Tungsten trioxide
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used as a precursor in tungsten catalysts and electrochromic materials.
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.3 — Other hazards
- Other hazards
- May cause respiratory irritation if inhaled.
3.1 — Substance
- Name
- Tungsten(VI) oxide
- CAS No.
- 1314-35-8
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If symptoms persist, seek medical attention.
- First-aid measures after skin contact
- Wash with soap and water. If irritation occurs, seek medical attention.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. If irritation persists, seek medical attention.
- First-aid measures after ingestion
- Rinse mouth. Do not induce vomiting. Seek medical attention if symptoms occur.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of the respiratory tract, skin, and eyes.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Non-flammable; however, may produce toxic fumes when heated.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Avoid dust formation. Use appropriate personal protective equipment.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Collect spillage with a vacuum or by wet sweeping and place in a suitable container for disposal.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Avoid dust formation. Use in a well-ventilated area and wear appropriate personal protective equipment.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Store in a cool, dry place, away from incompatible materials such as strong acids and bases.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use appropriate respiratory protection if dust is generated.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- Pale yellow to green
- Odour
- Odourless
- Odour threshold
- Not applicable
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- 1473 °C
- Freezing point
- Not applicable
- Boiling point
- 1500 °C
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Non-flammable
- Vapour pressure
- Low
- Relative vapour density at 20°C
- Not applicable
- Density
- 7.16 g/cm³
- Solubility
- Insoluble in water
- Log Pow
- Not applicable
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions; reacts with strong acids and bases.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- No dangerous reactions known under normal conditions of use.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong acids and bases.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Low toxicity; may cause irritation.
- Skin corrosion/irritation
- May cause mild irritation.
- Serious eye damage/irritation
- May cause mild irritation.
- Respiratory or skin sensitisation
- Not a sensitizer.
- Germ cell mutagenicity
- Not classified
- Carcinogenicity
- Not classified
- Specific target organ toxicity (single exposure)
- Not classified as a specific target organ toxicant.
- Specific target organ toxicity (repeated exposure)
- Not classified
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- Not assigned
- UN-No. (IMDG)
- Not assigned
- UN-No. (IATA)
- Not assigned
- UN-No. (ADN)
- Not assigned
- UN-No. (RID)
- Not assigned
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Not classified as dangerous goods
- Proper Shipping Name (IMDG)
- Not classified as dangerous goods
- Proper Shipping Name (IATA)
- Not classified as dangerous goods
- Proper Shipping Name (ADN)
- Not classified as dangerous goods
- Proper Shipping Name (RID)
- Not classified as dangerous goods
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- Not applicable
14.4 — Packing group
- Packing group (ADR)
- Not applicable
- Packing group (IMDG)
- Not applicable
- Packing group (IATA)
- Not applicable
- Packing group (ADN)
- Not applicable
- Packing group (RID)
- Not applicable
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Tungsten(VI) oxide is extensively used as a precursor in the production of tungsten catalysts, which are essential in various chemical reactions, including hydrocarbon processing and environmental applications. Additionally, it plays a crucial role in the development of electrochromic materials, which are utilized in smart windows that can change their transparency in response to electrical stimuli. This property is particularly valuable in energy-efficient building designs and automotive applications. Furthermore, tungsten trioxide is explored in the field of electronics for its potential use in sensors and other advanced material applications.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL1548B
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 231.85 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay Purity | ≥ 98% | 98.5% |
| Moisture Content | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 0.5% | 0.2% |
| Related Substances | None detected | None detected |
| Solubility | Insoluble in water | Insoluble in water |
The above product is expected to comply with 98% grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% | ≥ 98% | 1473 °C | ≤ 0.5% | ≤ 0.5% | None detected | Insoluble in water |
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