Material Safety Data Sheet - Tungsten Boat

Identification

Product Name: Tungsten Boat
Chemical Name: Tungsten
Synonyms: W, Tungsten Metal, Sputtering Target
Manufacturer: Reputable suppliers specializing in high-purity metals
Product Use: Thermal evaporation in vacuum deposition processes, electronics fabrication, material research
Contact Information: Customer service lines, supplier emergency numbers provided on packaging documentation
CAS Number: 7440-33-7

Hazard Identification

GHS Classification: Not classified as hazardous under normal storage and handling conditions
Physical Hazards: Sharp edges can cause cuts, powder form is flammable
Health Hazards: Dust inhalation may irritate respiratory tract, metallic taste on contact with mucous membranes, possible eye irritation, skin contact may cause mild irritation
Environmental Hazards: Not considered hazardous to aquatic systems in solid form
Signal Word: None
Hazard Statements: Particulates may cause eye or respiratory irritation, handle with care to avoid mechanical injuries
Pictograms: Not required by GHS for bulk tungsten

Composition / Information on Ingredients

Chemical Identity: Tungsten
Formula: W
Percentage: >99.9%
Impurities: Trace metal contaminants (not expected to have significant health impact)
Other Components: No intentional additives or binders

First Aid Measures

Inhalation: Move affected person to fresh air, seek medical attention for symptoms like persistent cough or difficulty breathing
Skin Contact: Wash with soap and water, monitor for persistent rash or irritation, seek medical care if symptoms continue
Eye Contact: Rinse eyes cautiously with water for several minutes, seek medical review for continued discomfort
Ingestion: Rinse mouth, seek immediate medical assistance if discomfort develops; swallowing large pieces is highly unlikely in workplace conditions
Notes for Physician: Supportive measures based on symptoms, no specific antidote

Fire-Fighting Measures

Sensitivity to Fire: Non-flammable in bulk form, powder or fine dust poses risk of ignition by sparks or flames
Suitable Extinguishing Media: Dry chemical, sand, graphite, Class D metal fire extinguisher; avoid water or CO₂ with burning powder
Special Hazards: Intense heat, toxic fumes of tungsten oxides if heated beyond normal uses
Protection for Firefighters: Full protective gear, self-contained breathing apparatus
Thermal Decomposition Products: Tungsten trioxide fumes under extreme heat

Accidental Release Measures

Personal Precautions: Wear gloves, dust masks, safety goggles, avoid creating dust clouds
Environmental Precautions: Collect and contain any fine particles, avoid release into water systems
Cleanup Methods: Sweep up solids into containers, use HEPA vacuum or wet methods for fine dust, avoid dry sweeping large dust amounts
Disposal of Waste: Place material in sealed containers for recycling or disposal

Handling and Storage

Handling Precautions: Minimize dust, wear gloves to avoid cuts, use tools for handling small pieces
Safe Storage Conditions: Store in well-ventilated, dry conditions, avoid moisture and acids
Incompatibilities: Strong oxidizers, chlorine, hydrofluoric acid, extreme humidity
Storage Containers: Use dedicated, labeled containers, prevent accidental mixing with reactive substances
Protective Practices: No smoking or open flames near powder storage

Exposure Controls and Personal Protection

Exposure Limits: ACGIH TLV: 5 mg/m³ (as tungsten, insoluble compounds, time-weighted average)
Engineering Controls: Local exhaust ventilation, dust collection units, avoid recirculation of dust-laden air
Personal Protection: NIOSH-approved respirator for dusty conditions, safety glasses with side shields, chemical-resistant gloves, protective clothing as needed
Hygiene Measures: Wash hands after handling, avoid eating or drinking near work area

Physical and Chemical Properties

Appearance: Grey metallic solid, boat-shaped
Odor: Odorless
Melting Point: 3,422°C (6,192°F)
Boiling Point: 5,555°C (10,031°F)
Density: 19.3 g/cm³
Solubility in Water: Insoluble
Vapor Pressure: Negligible at room temperature
pH: Not applicable
Molecular Weight: 183.84 g/mol
Evaporation Rate: Not applicable
Flash Point: Not applicable
Partition Coefficient: Not applicable
Flammability (solid): Non-flammable
Upper/Lower Flammability Limits: Not relevant for bulk solid

Stability and Reactivity

Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: Exposure to acids, strong oxidizers, halogens; avoid high humidity
Incompatible Materials: Chlorine, bromine trifluoride, hydrofluoric acid, oxidizing agents
Hazardous Decomposition: Tungsten oxides under intense heat or fire
Hazardous Polymerization: Not expected

Toxicological Information

Acute Effects: Dust may irritate eyes, respiratory system, skin; ingestion unlikely to cause effects in solid form
Chronic Effects: Long-term exposure to high dust levels may affect lungs; insufficient evidence for carcinogenicity in humans
Routes of Exposure: Inhalation, skin contact, eye contact
LD50/LC50: No data for metallic tungsten; very high doses in powder form needed for toxicity
Sensitization: Not reported
Reproductive/Developmental Effects: No evidence in humans
Mutagenicity: Not classified as mutagenic
Carcinogenicity: Not listed by IARC, NTP, or OSHA

Ecological Information

Ecotoxicity: Not regarded as ecotoxic in solid, bulk form
Persistence/Degradability: Highly persistent and insoluble; does not break down in soil or water
Bioaccumulative Potential: Very low, tungsten rarely accumulates in organisms
Mobility in Soil: Immobile in bulk form; powder may disperse in wind or water if not contained
Other Adverse Effects: None known at environmentally relevant concentrations

Disposal Considerations

Disposal Methods: Follow local, regional, national regulations for solid metal waste
Recycling: Preferred route due to high value and reusability of tungsten
Special Instructions: Avoid processing powder waste with general trash, keep separate from flammable or reactive materials
Contaminated Packaging: Clean containers may be recycled; contaminated bags or boxes go to industrial waste

Transport Information

UN Number: Not regulated for transport as a hazardous material
Proper Shipping Name: Tungsten Metal
Transport Hazard Class: None
Packing Group: Not applicable
Environmental Hazards: None for bulk solid
Special Precautions for Transport: Secure load to prevent shifting, avoid shipping with oxidizing or acidic agents
Regulatory References: International Air Transport Association (IATA), Department of Transportation (DOT), International Maritime Dangerous Goods (IMDG)

Regulatory Information

Inventory Listings: Listed on TSCA, EINECS/ELINCS, AICS
OSHA Status: Not hazardous under OSHA Hazard Communication Standard (29 CFR 1910.1200)
SARA Title III: Not subject to reporting
California Proposition 65: Not listed
RoHS Compliance: Tungsten complies with current ROHS limitations
WHMIS Classification: Not regulated in Canada as a hazardous product
REACH Status: Registered or exempted, depending on use and tenure in the market
Other National/Local Regulations: Follow additional country-specific requirements where applicable