Material Safety Data Sheet: Tungsten Dichloride Dioxide

Identification

Product Name: Tungsten Dichloride Dioxide
Chemical Formula: WO2Cl2
CAS Number: 13520-14-6
Synonyms: Tungstic dichloride dioxide, Tungsten(VI) oxydichloride
Recommended Use: Research, chemical synthesis, and materials science
Manufacturer: Refer to supplier documentation
Contact number for emergencies: Refer to local or national authority

Hazard Identification

Classification: Corrosive to eyes, skin, and respiratory tract
GHS Symbol: Corrosive (GHS05), Health hazard (GHS08)
Potential Health Effects: Causes severe skin burns and eye damage; Inhalation may irritate respiratory tract and mucous membranes; Prolonged exposure may affect lungs
Routes of Exposure: Inhalation, skin, eyes, ingestion
Environmental Risks: Toxic to aquatic life with long-lasting effects
Signal Word: Danger

Composition / Information on Ingredients

Chemical Name: Tungsten Dichloride Dioxide
CAS Number: 13520-14-6
Concentration: 100%
Impurities: No significant impurities known
Molecular Weight: 268.74 g/mol

First Aid Measures

General: Seek medical attention for all exposures
Inhalation: Move affected person to fresh air, keep at rest, seek prompt medical care, provide oxygen if breathing is difficult
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with plenty of water for at least 20 minutes, do not use neutralizing agents
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if possible, seek immediate medical attention
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical care
Important Symptoms: Burning pain, blistering, possible impaired respiration

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam
Unsuitable Media: Water streams may spread material
Hazardous Combustion Products: Hydrogen chloride, tungsten oxides
Advice for Firefighters: Wear self-contained breathing apparatus and full protective gear, avoid inhalation of gases
Fire Hazards: Decomposes upon heating, generating toxic fumes
Protective Actions: Move containers from fire area if safe, use water spray to cool containers

Accidental Release Measures

Personal Precautions: Evacuate area, ventilate, avoid contact with skin and eyes, use appropriate PPE
Environmental Precautions: Prevent entry into sewers or waterways, contain spill, notify authorities in case of significant release
Methods for Clean-Up: Collect spilled material using inert absorbent (such as sand or vermiculite), place in a closed container for disposal, wash area with plenty of water
Emergency Procedures: Restrict access to affected area, provide adequate ventilation

Handling and Storage

Handling: Avoid breathing dust or fumes, wear chemical-resistant gloves, use only with adequate ventilation, do not eat or drink when handling
Storage: Store in a tightly closed container, in a cool, dry, and well-ventilated area, away from incompatible materials such as strong bases and oxidizing agents
Specific End Use: Intended for laboratory or industrial use by trained personnel
Incompatibilities: Avoid contact with moisture, acids, organics

Exposure Controls and Personal Protection

Occupational Exposure Limits: No specific limits established by OSHA, NIOSH, or ACGIH for this compound; minimize dust and inhalation
Engineering Controls: Use fume hood or equivalent local exhaust ventilation
Respiratory Protection: Use NIOSH-approved respirator if exposure limits are exceeded
Eye Protection: Wear chemical safety goggles with side shields
Skin Protection: Use impermeable gloves and long-sleeved lab coat
General Hygiene: Wash hands thoroughly after handling, change contaminated clothing

Physical and Chemical Properties

Appearance: Pale yellow or white crystalline powder
Odor: Pungent, irritating
pH: Not measurable in water; reacts to form acid
Melting Point: 204°C (399°F)
Boiling Point: Decomposes before boiling
Solubility: Unstable in water, decomposes
Density: 3.43 g/cm³
Vapor Pressure: Not established
Molecular Formula: WO2Cl2
Stability: Decomposes on exposure to moisture

Stability and Reactivity

Reactivity: Reacts with water, acids, bases, organic substances
Chemical Stability: Stable in dry, sealed storage; moisture causes decomposition
Hazardous Reactions: Evolves toxic gases such as hydrogen chloride and tungsten oxides on contact with moisture or high temperatures
Materials to Avoid: Water, alcohols, amines, alkali metals
Decomposition Products: Hydrogen chloride gas, tungsten trioxide

Toxicological Information

Acute Toxicity: Harmful if swallowed, inhaled, or absorbed through skin
Skin Corrosion: Causes burns, possible ulceration
Eye Damage: Causes severe burns, may cause blindness
Inhalation: Irritation, coughing, possible pulmonary effects
Chronic Effects: Long-term exposure may cause respiratory tract damage and systemic toxicity
Carcinogenicity: No data suggest carcinogenic potential for tungsten dichloride dioxide
Mutagenic Effects: Insufficient information
Target Organs: Lungs, skin, eyes

Ecological Information

Aquatic Toxicity: Highly toxic to aquatic organisms
Persistence and Degradability: Not readily biodegradable, forms stable tungsten oxides in environment
Bioaccumulation Potential: Unknown; transition metal compounds may accumulate in sediments
Mobility in Soil: Limited by decomposition and strong binding to soil components
Other Adverse Effects: Considerable risk to aquatic and terrestrial biota if released in large quantities

Disposal Considerations

Waste Disposal: Dispose of in accordance with local, regional, and national regulations; hazardous waste status likely
Methods: Incineration or chemical treatment by licensed waste contractor recommended
Contaminated Packaging: Treat packaging as hazardous unless thoroughly cleaned
Precautions: Do not discharge to surface water or sanitary sewer system

Transport Information

UN Number: 3260
UN Proper Shipping Name: Corrosive solid, acidic, inorganic, n.o.s. (contains Tungsten Dichloride Dioxide)
Transport Hazard Classes: 8 (Corrosive)
Packing Group: II
Marine Pollutant: Yes
Special Precautions: Avoid moisture exposure during transport, use airtight containers

Regulatory Information

TSCA: Listed or covered by a blanket exemption for research chemicals
REACH: Use restricted under Annex XVII where applicable
OSHA Hazard Communication: Covered by the Hazard Communication Standard
SARA Title III: Not specifically listed as an extremely hazardous substance; reportable quantities may apply to releases
California Prop 65: Not listed
International Regulations: Subject to shipment controls under IATA, IMDG, ADR
Workplace Labeling: Clear hazard and precaution labeling required in workplace