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Section 1: Product Identification
   Chemical Name:       Ruthenium(VIII) oxide (0.5% stabilized aqueous solution)    
   CAS Registry Number:       20427-56-9    
   Formula:       RuO4    
   EINECS Number:       none    
   Chemical Family:       metal oxide    
   Synonym:       ruthenium tetroxide    

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Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title Compound       20427-56-9       0.5%       no data       no data    

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Section 3: Hazards Identification
   Emergency Overview:       Irritating to skin, eyes and mucous membranes. May be harmful if swallowed.    
   Primary Routes of Exposure:       Ingestion, eyes    
   Eye Contact:       Causes slight to mild irritation of the eyes.    
   Skin Contact:       Causes slight to mild irritation of the skin.    
   Inhalation:       Irritating to the nose, mucous membranes and respiratory tract.    
   Ingestion:       No specific information is available on the physiological effects of ingestion.    
   Acute Health Affects:       Irritating to skin, eyes and respiratory tract.    
   Chronic Health Affects:       Exposure to ruthenium tetroxide dust and vapors may cause severe permanent damage to eyes and lungs.    
   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
   Inhalation:
   in 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:       not applicable    
   Autoignition Temperature:       not applicable    
   Explosion Limits:       not applicable    
   Extinguishing Medium:       Aqueous solution - non-flammable    
   When dry acts as an oxidizer towards organics. Smothering the fire may not be effective. A NIOSH approved
   Special Fire Fighting Procedures:
   self contained breathing apparatus should be worn.
   Hazardous Combustion and       Toxic ruthenium tetroxide could be present in gasses.    
   Decomposion Products:
   Wetting the dried solid with small amounts of alcohols, solvents or combustible powders may lead to ignition
   Unusual Fire or Explosion Hazards:
   and fire.

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SECTION 6: Accidental Release Measures
   Small spills should be flushed with sodium bisulfite solution to detoxify ruthenium tetroxide, and then be mixed
   Spill and Leak Procedures:
   with vermiculite or sodium carbonate and swept up. Do not mix with combustible materials.

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SECTION 7: Handling and Storage
   Handling and Storage:       Store in a cool dark place in tightly closed containers.    

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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 appropriate chemical resistant gloves and protective clothing.    
   Ventilation:       Material may form a fine dust or vapor. 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 Respirator
   Respirator:
   Protection Program to be in compliance with 29 CFR 1910.134.
   Ventilation:       Material may form a fine dust or vapor. 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:       yellow liq.    
   Molecular Weight:       165.7    
   Melting Point:       no data    
   Boiling Point:       (water)    
   Vapor Pressure:       no data    
   Specific Gravity:       no data    
   Odor:       acrid odor    
   Solubility in Water:       material is a water solution    

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SECTION 10: Stability and Reactivity
   Stability:       heat sensitive, (store cold, in the dark)    
   Hazardous Polymerization:       no hazardous polymerization    
   Conditions to Avoid:       The dry powder reacts violently with paper, alcohol, and other combustibles.    
   Incompatibility:       Reducing agents, organic materials, active metals and halogens    
   Decomposition Products:       ruthenium and oxygen    

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

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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):       Oxidizing liquid, N.O.S.    
   Hazard Class (CFR):       5.1    
   Additional Hazard Class (CFR):       NA    
   Packaging Group (CFR):       II    
   UN ID Number (CFR):       UN# 3139    
   Shipping Name (IATA):       Oxidizing liquid, N.O.S.    
   Hazard Class (IATA):       5.1    
   Additional Hazard Class (IATA):       NA    
   Packaging Group (IATA):       II    
   UN ID Number (IATA):       UN# 3139    

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SECTION 15: Regulatory Information
   TSCA:       Not 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