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Section 1: Product Identification
   Chemical Name:       Potassium selenite    
   CAS Registry Number:       10431-47-7    
   Formula:       K2SeO3    
   EINECS Number:       233-909-8    
   Chemical Family:       inorganic compound    
   Synonym:       Dipotassium selenite    

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Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title compound       10431-47-7       100%       0.2mg/m3 (as Se)       0.2mg/m3 (as Se)    

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Section 3: Hazards Identification
   Poison. Ingestion may be fatal at low doses. Inhalation may cause shortness of breath, garlic odor, chills and
   Emergency Overview:
   headache. Chronic exposure may result in nervous disorders, liver and kidney disease.
   Primary Routes of Exposure:       Ingestion, inhalation, skin, eyes.    
   Eye Contact:       May cause severe irritation, redness, pain.    
   Skin Contact:       May causes severe irritation. Symptoms include redness, itching and pain.    
   Inhalation can cause garlic odor and shortness of breath, chills, headache, and delayed pulmonary edema.
   Inhalation:
   Toxic by inhalation.
   Ingestion:       Toxic. May be fatal if swallowed. May cause gastrointestinal irritation, nausea and vomiting.    
   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 immediately with water. Remove contaminated clothing if necessary. Seek medical
   Skin Exposure:
   assistance if 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:       no data    
   Autoignition Temperature:       no data    
   Explosion Limits:       no data    
   Extinguishing Medium:       carbon dioxide or dry powder    
   If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure
   Special Fire Fighting Procedures:
   self- contained breathing apparatus and full protective clothing.
   Hazardous Combustion and       If involved in a fire, toxic oxidation or decomposition products may form.    
   Decomposion Products:
   Unusual Fire or Explosion Hazards: Non-flammable. No unusual fire or explosion hazard.

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SECTION 6: Accidental Release Measures
   Spill and Leak Procedures:       Sweep up the solid and dispose of properly.    

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SECTION 7: Handling and Storage
   Handling and Storage:       Store in a cool, dry place in a tightly sealed container.    

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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:       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:       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:       white powder    
   Molecular Weight:       205.16    
   Melting Point:       875° dec.    
   Boiling Point:       no data    
   Vapor Pressure:       no data    
   Specific Gravity:       no data    
   Odor:       none    
   Solubility in Water:       soluble    

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SECTION 10: Stability and Reactivity
   Stability:       hygroscopic    
   Hazardous Polymerization:       no hazardous polymerization    
   Conditions to Avoid:       none    
   Incompatibility:       active metals and oxidizing agents    
   Decomposition Products:       potassium oxide and selenium oxide    

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SECTION 11: Toxicological Information
   RTECS Data:       Status: EPA Genetox Program 1988: negative B subtilis rec. assay.    
   Carcinogenic Effects:       no data    
   Mutagenic Effects:       Negative 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):       Selenates or Selenites    
   Hazard Class (CFR):       6.1    
   Additional Hazard Class (CFR):       NA    
   Packaging Group (CFR):       I    
   UN ID Number (CFR):       UN# 2630    
   Shipping Name (IATA):       Selenates or Selenites    
   Hazard Class (IATA):       6.1    
   Additional Hazard Class (IATA):       NA    
   Packaging Group (IATA):       I    
   UN ID Number (IATA):       UN# 2630    

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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