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Section 1: Product Identification
   Chemical Name:       Molybdenum silicide (99+%-Mo)    
   CAS Registry Number:       12136-78-6    
   Formula:       MoSi2    
   EINECS Number:       235-231-8    
   Chemical Family:       metal silicide    
   Synonym:       Molybdenum disilicide    

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Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title compound       12136-78-6       100%       10mg/m3( as Mo)       15mg/m3 (as Mo)    

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Section 3: Hazards Identification
   Emergency Overview:       May be irritating to skin and eyes and respiratory tract.    
   Primary Routes of Exposure:       Ingestion, inhalation    
   Eye Contact:       May be a mild to severe irritant to the eyes.    
   Skin Contact:       May cause slight to mild irritation of the skin.    
   Inhalation:       Do not breath dust. Inhalation of powder may lead to irritation of the respiratory tract.    
   Ingestion:       No information is available on the physiological effects of ingestion.    
   Acute Health Affects:       May be irritating to skin, eyes, mucous membranes and respiratory tract. Do not breath dust.    
   Chronic Health Affects:       No information available on long-term chronic effects.    
   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       No hazardous combustion or decomposition products.    
   Decomposion Products:
   Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

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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:       black powder    
   Molecular Weight:       152.13    
   Melting Point:       no data    
   Boiling Point:       no data    
   Vapor Pressure:       no data    
   Specific Gravity:       6.31    
   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:       none    
   Incompatibility:       oxidizing agents    
   Decomposition Products:       none    

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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):       Title compound not listed.    
   Second Ingredient:       none    

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SECTION 16 - ADDITIONAL INFORMATION
N/A