Material Safety Data Sheet: Molybdenum Powder
Identification
Product Name: Molybdenum Powder
Chemical Formula: Mo
Recommended Use: Industrial applications, metal alloy production, catalysts
Manufacturer: [Company Name]
Emergency Contact: [Phone Number]
CAS Number: 7439-98-7
Email for Safety Inquiry: [Safety Department Email]
Physical State: Powder
Synonyms: Moly; Metallic molybdenum
UN Number: Not assigned
Hazard Identification
GHS Classification: Not classified as hazardous under GHS criteria
Main Hazards: May cause mechanical irritation to eyes, skin, respiratory tract
Signal Word: None
Pictograms: None
Possible Routes of Entry: Inhalation, skin, eyes
Potential Health Effects: Prolonged inhalation may cause irritation, coughing
Chronic Hazard: Overexposure may affect lungs at high levels of dust
Composition / Information on Ingredients
Chemical Name: Molybdenum
Concentration: More than 99%
Impurities: Trace amounts of iron, copper, lead
Ingredient Type: Metallic powder
Other Components: No other hazardous ingredients present
First Aid Measures
Inhalation: Move person to fresh air, ease breathing, seek medical attention if symptoms persist
Skin Contact: Wash gently with soap and water, remove contaminated clothing, get medical advice if irritation appears
Eye Contact: Rinse eyes with plenty of water for several minutes, avoid rubbing, consult a doctor if discomfort continues
Ingestion: Rinse mouth if swallowed, seek medical help if feeling unwell
Important Symptoms: Persistent cough, eye redness, skin irritation
Advice for Doctor: Treat symptomatically
Fire-Fighting Measures
Suitable Extinguishing Media: Dry chemical, sand, powder extinguishers recommended
Special Hazards: Fine powder can ignite at high temperatures, form metal oxide fumes
Protective Equipment: Firefighters should wear full protective gear and self-contained breathing apparatus
Combustion Products: Molybdenum trioxide, metal fumes
Precautions: Avoid water if large quantities of powder present, use methods minimizing dust dispersion
Explosion Hazard: Dust clouds may be explosive, keep ignition sources away
Accidental Release Measures
Personal Protection: Wear gloves, goggles, respirator if dusty
Release Response: Remove ignition sources, ventilate area
Spill Cleanup: Scoop up spilled powder using non-sparking tools, avoid generating dust
Waste Disposal: Place collected material in labeled containers for proper disposal
Environmental Precautions: Prevent powder from entering drains or waterways
Decontamination: Clean surfaces with wet wiping, avoid dry sweeping
Handling and Storage
Safe Handling: Use with adequate ventilation, avoid inhaling dust or contact with skin and eyes
Hygiene Practices: Wash thoroughly after handling, keep work area clean
Storage: Store in tightly closed containers in cool, dry, well-ventilated place
Incompatible Materials: Strong oxidizers, acids, halogens
Precautions: Prevent dust accumulation, ground containers to avoid static
Specific Uses: Industrial production, research, alloy manufacturing
Exposure Controls and Personal Protection
Occupational Exposure Limits: ACGIH TLV: 10 mg/m³ (inhalable); 3 mg/m³ (respirable)
Engineering Controls: Local exhaust ventilation, process enclosures
Personal Protection: Protective gloves, goggles, lab coat, respirator for dust
Hygiene Measures: No eating, drinking, or smoking during handling, wash hands after use
Environmental Controls: Keep container tightly closed, use dust collection systems where needed
Monitoring: Regular air monitoring in workplace recommended
Physical and Chemical Properties
Appearance: Metallic gray powder
Odor: Odorless
Melting Point: 2623°C (4753°F)
Boiling Point: 4639°C (8382°F)
Density: 10.2 g/cm³
Solubility: Insoluble in water
Vapor Pressure: Not applicable
Explosion Properties: Dust may form explosive mixtures with air
Evaporation Rate: Not applicable
Partition Coefficient: Not applicable
Stability and Reactivity
Chemical Stability: Stable under recommended conditions
Reactivity: Reacts with strong oxidizers, acids may produce hazardous gases
Hazardous Reactions: Risk of ignition with finely divided powder and air
Decomposition Products: Metal oxides on strong heating
Polymerization: Will not occur
Storage Sensitivity: Moisture, strong heat, acids
Toxicological Information
Routes of Exposure: Inhalation, skin, eyes
Acute Toxicity: Low acute toxicity, irritant potential for respiratory tract
Chronic Effects: Prolonged exposure may cause lung irritation
Sensitization: Not a known sensitizer
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, OSHA
Mutagenicity / Teratogenicity: Not expected to be mutagenic or teratogenic
Other Effects: No reported reproductive hazards
Ecological Information
Aquatic Toxicity: Harmful to aquatic organisms at high concentrations
Mobility in Soil: Low mobility, binds to soil particles
Persistence and Degradability: Elemental molybdenum persists in environment
Bioaccumulation Potential: Low potential for bioaccumulation
Other Environmental Impacts: Large spills may cause soil and water contamination; avoid release to environment
Disposal Considerations
Waste Disposal Methods: Manage as non-hazardous solid waste under local regulations, landfill or incinerate in approved facilities
Contaminated Packaging: Clean thoroughly before reuse or disposal
Precautions: Prevent dust generation during disposal
Special Instructions: Do not allow material to enter sewers or waterways
Regulatory Waste Codes: Not a listed hazardous waste in most regions
Transport Information
UN Number: Not regulated under UN transport rules
Proper Shipping Name: Molybdenum Powder
Transport Hazard Class: Not classified as a hazardous material
Packing Group: None
Label Requirements: None
Environmental Hazards: Not considered marine pollutant
Special Precautions for User: Use proper packaging to avoid spillage, prevent dust emission during transit
Regulatory Information
OSHA Status: Material subject to dust hazard regulations
TSCA Inventory: Molybdenum listed
REACH Status: Registered
SARA Title III: Not subject to reporting requirements
California Prop 65: Not listed
Canadian WHMIS: Not controlled
EU Classification: Not classified as hazardous
Other Regulations: Follow workplace safety laws on dust control and personal protection
