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Section 1: Product Identification
   Chemical Name:       Molybdenum (IV) selenide (99.9%-Mo)    
   CAS Registry Number:       12058-18-3    
   Formula:       MoSe2    
   EINECS Number:       235-027-9    
   Chemical Family:       metal chalcogenides    
   Synonym:       Molybdenum diselenide    

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Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title compound       12058-18-3       100%       10mg/m3( as Mo)       15mg/m3 (as Mo)    

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Section 3: Hazards Identification
   Exposure to selenium containing dusts can cause shortness of breath, garlic odor, chills and headache.
   Emergency Overview:
   Chronic exposure may result in nervous disorders, dermatitis, liver and kidney disease.
   Primary Routes of Exposure:       Ingestion, inhalation.    
   Eye Contact:       May cause mild to moderate irritation of the eyes.    
   Skin Contact:       May cause irritation of the skin, and upon repeated contact, dermatitis.    
   Inhalation:       Dust may cause garlic odor, shortness of breath, chills, headache, and delayed pulmonary edema.    
   Ingestion:       Ingestion may lead to nausea, vomiting, bloody diarrhea, weakness and chronic diseases.    
   May be irritating to skin, eyes, and respiratory tract and cause nausea, vomiting, bloody diarrhea, weakness,
   Acute Health Affects:
   chills, headache, and delayed pulmonary edema.
   Prolonged exposure to selenium compounds may cause dermatitis, diarrhea, liver damage, nervous disorders,
   Chronic Health Affects:
   lameness and loss of vitality.
   NTP:       No    
   IARC:       No    
   OSHA:       No    

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SECTION 4: First Aid Measures
   Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
   Eye Exposure:
   assistance in keeping their eye lids open. Get immediate medical attention.
   Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
   Skin Exposure:
   irritation persists.
   Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty in
   Inhalation:
   breathing, coughing, wheezing or pain. In such cases seek immediate medical assistance.
   Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
   Ingestion:
   vomiting only if directed by medical personnel.

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SECTION 5: Fire Fighting Measures
   Flash Point:       no data    
   Autoignition Temperature:       no data    
   Explosion Limits:       no data    
   Extinguishing Medium:       carbon dioxide, dry powder or foam.    
   If involved in a fire, fire fighters should be equipped with NIOSH approved positive pressure self-contained
   Special Fire Fighting Procedures:
   breathing apparatus and full protective clothing.
   Hazardous Combustion and       If involved in a fire this material may emit toxic fumes of hydrogen selenide.    
   Decomposion Products:
   Unusual Fire or Explosion Hazards: No unusual fire or explosion hazard.

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SECTION 6: Accidental Release Measures
   Small spills can be mixed with vermiculite, sodium carbonate or other suitable non combustible adsorbent and
   Spill and Leak Procedures:
   swept up.

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SECTION 7: Handling and Storage
   Handling and Storage:       No special precautions needed in handling and storage..    

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SECTION 8: Exposure Controls and Personal Protection
   Eye Protection:       Always wear approved safety glasses when handling a chemical substance in the laboratory.    
   Skin Protection:       Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove.    
   Ventilation:       Material may form a fine dust. If possible, handle the material in an efficient fume hood.    
   If ventilation is not available a respirator should be worn. The use of respirators requires a Respiratory
   Respirator:
   Protection Program to be in compliance with 29 CFR 1910.134.
   Ventilation:       Material may form a fine dust. If possible, handle the material in an efficient fume hood.    
   Additional Protection:       No additional protection required.    

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SECTION 9: Physical and Chemical Properties
   Color and Form:       -325 mesh gray powder    
   Molecular Weight:       253.87    
   Melting Point:       >1200°    
   Boiling Point:       no data    
   Vapor Pressure:       no data    
   Specific Gravity:       6    
   Odor:       none    
   Solubility in Water:       insoluble    

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SECTION 10: Stability and Reactivity
   Stability:       air and moisture stable.    
   Hazardous Polymerization:       No hazardous polymerization.    
   Conditions to Avoid:       Mineral acids may form toxic hydrogen selenide vapors    
   Incompatibility:       mineral acids    
   Decomposition Products:       selenium oxide and molybdenum oxide    

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SECTION 11: Toxicological Information
   RTECS Data:       No information available in the RTECS files.    
   Carcinogenic Effects:       no data    
   Mutagenic Effects:       no data    
   Tetratogenic Effects:       no data    

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SECTION 12: Ecological Information
   Ecological Information:       No information available    

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SECTION 13: Disposal Considerations
   Disposal:       Dispose of according to local, state and federal regulations.    

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SECTION 14: Transportation
   Shipping Name (CFR):       Non-hazardous    
   Hazard Class (CFR):       NA    
   Additional Hazard Class (CFR):       NA    
   Packaging Group (CFR):       NA    
   UN ID Number (CFR):       NA    
   Shipping Name (IATA):       Non-hazardous    
   Hazard Class (IATA):       NA    
   Additional Hazard Class (IATA):       NA    
   Packaging Group (IATA):       NA    
   UN ID Number (IATA):       NA    

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SECTION 15: Regulatory Information
   TSCA:       Listed in the TSCA inventory.    
   SARA (Title 313):       See category Code N725 for reporting.    
   Second Ingredient:       none    

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SECTION 16 - ADDITIONAL INFORMATION
N/A