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Section 1. Chemical Product and Company Identification
    Potassium Thiosulfate
    Common Name/
    Trade Name
    Manufacturer
    Commercial Name(s)
    Synonym
    Chemical Name
    Chemical Family
    Potassium Thiosulfate

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Section 4. First Aid Measures
    Eye Contact        Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at    
    least 15 minutes. Cold water may be used. Get medical attention.
    Skin Contact        In case of contact, immediately flush skin with plenty of water. Cover the irritated skin with an emollient. Remove    
    contaminated clothing and shoes. Cold water may be used.Wash clothing before reuse. Thoroughly clean shoes
    before reuse. Get medical attention.
    Serious Skin Contact        Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek medical    
    attention.
    Inhalation        If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get    
    medical attention.
    Serious Inhalation        Not available.    
    Ingestion        Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an    
    unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen tight
    clothing such as a collar, tie, belt or waistband.
    Serious Ingestion        Not available.    

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Section 5. Fire and Explosion Data
    Flammability of the Product May be combustible at high temperature.
    Auto-Ignition Temperature Not available.
    Flash Points        Not available.    
    Flammable Limits        Not available.    
    Products of Combustion        Not available.    
    Fire Hazards in Presence of Slightly flammable to flammable in presence of heat.
    Various Substances
    Explosion Hazards in Presence Risks of explosion of the product in presence of mechanical impact: Not available.
    of Various Substances        Risks of explosion of the product in presence of static discharge: Not available.    
    Fire Fighting Media        SMALL FIRE: Use DRY chemical powder.    
    and Instructions        LARGE FIRE: Use water spray, fog or foam. Do not use water jet.    
    Special Remarks on        As with most organic solids, fire is possible at elevated temperatures    
    Fire Hazards
    Special Remarks on Explosion Not available.
    Hazards

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Section 6. Accidental Release Measures
    Small Spill        Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by    
    spreading water on the contaminated surface and dispose of according to local and regional authority
    requirements.
    Large Spill        Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water    
    on the contaminated surface and allow to evacuate through the sanitary system.
    Potassium Thiosulfate

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Section 7. Handling and Storage
    Precautions        Keep away from heat. Keep away from sources of ignition. Empty containers pose a fire risk, evaporate the    
    residue under a fume hood. Ground all equipment containing material. Do not breathe dust. Wear suitable
    protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment. If you feel unwell, seek
    medical attention and show the label when possible. Avoid contact with skin and eyes. Keep away from
    incompatibles such as oxidizing agents, acids.
    Storage        Keep container tightly closed. Keep container in a cool, well-ventilated area.    

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Section 8. Exposure Controls/Personal Protection
    Engineering Controls        Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below    
    recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to
    airborne contaminants below the exposure limit.
    Personal Protection        Splash goggles. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.    
    Gloves.
    Personal Protection in Case of Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used
    a Large Spill        to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist    
    BEFORE handling this product.
    Exposure Limits        Not available.    

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Section 9. Physical and Chemical Properties
    Physical state and appearance Solid.        Odor        Not available.    
    Not available.
    Taste
    Molecular Weight        194.08 g/mole    
    Not available.
    Color
    Not available.
    pH (1% soln/water)
    Boiling Point        Not available.    
    Not available.
    Melting Point
    Critical Temperature        Not available.    
    Specific Gravity        1.484 (Water = 1)    
    Vapor Pressure        Not applicable.    
    Vapor Density        Not available.    
    Not available.
    Volatility
    Odor Threshold        Not available.    
    Water/Oil Dist. Coeff.        Not available.    
    Ionicity (in Water)        Not available.    
    Dispersion Properties        See solubility in water.    
    Solubility        Soluble in cold water.    

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Section 10. Stability and Reactivity Data
    Stability        The product is stable.    
    Instability Temperature        Not available.    
    Conditions of Instability        Excess heat, incompatible materials    
    Incompatibility with various Reactive with oxidizing agents, acids.
    substances
    Potassium Thiosulfate
    Corrosivity        Not available.    
    Special Remarks on        Not available.    
    Reactivity
    Special Remarks on        Not available.    
    Corrosivity
    Polymerization        Will not occur.    

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Section 11. Toxicological Information
    Routes of Entry        Inhalation. Ingestion.    
    Toxicity to Animals        LD50: Not available.    
    LC50: Not available.
    Chronic Effects on Humans Not available.
    Other Toxic Effects on        Hazardous in case of skin contact (irritant), of ingestion, of inhalation.    
    Humans
    Special Remarks on        Not available.    
    Toxicity to Animals
    Special Remarks on        Not available.    
    Chronic Effects on Humans
    Special Remarks on other        Not available.    
    Toxic Effects on Humans

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Section 12. Ecological Information
    Not available.
    Ecotoxicity
    BOD5 and COD        Not available.    
    Products of Biodegradation        Possibly hazardous short term degradation products are not likely. However, long term degradation products may    
    arise.
    Toxicity of the Products        The product itself and its products of degradation are not toxic.    
    of Biodegradation
    Special Remarks on the        Not available.    
    Products of Biodegradation

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Section 13. Disposal Considerations
    Waste Disposal        Waste must be disposed of in accordance with federal, state and local environmental    
    control regulations.

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Section 14. Transport Information
    DOT Classification        Not a DOT controlled material (United States).    
    Identification        Not applicable.    
    Special Provisions for        Not applicable.    
    Transport
    Potassium Thiosulfate
    DOT (Pictograms)

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Section 15. Other Regulatory Information and Pictograms
    TSCA 8(b) inventory: Potassium Thiosulfate
    Federal and State
    Regulations
    California        California prop. 65: This product contains the following ingredients for which the State of California has found    
    to cause cancer which would require a warning under the statute: No products were found.
    Proposition 65
    Warnings
    California prop. 65: This product contains the following ingredients for which the State of California has found
    to cause birth defects which would require a warning under the statute: No products were found.
    Other Regulations        EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances (EINECS No.    
    233-666-8).
    Canada: Listed on Canadian Domestic Substance List (DSL).
    China: Listed on National Inventory.
    Japan: Listed on National Inventory (ENCS).
    Korea: Listed on National Inventory (KECI).
    Philippines: Listed on National Inventory (PICCS).
    Australia: Listed on AICS.
    Other Classifications        WHMIS (Canada) Not controlled under WHMIS (Canada).    
    DSCL (EEC)        R36/38- Irritating to eyes and skin.        S26- In case of contact with eyes, rinse    
    immediately with plenty of water and seek
    medical advice.
    S37- Wear suitable gloves.
    Health Hazard
    HMIS (U.S.A.)        2 National Fire Protection    
    1 Flammability
    1 Association (U.S.A.)
    Fire Hazard
    2 0 Reactivity
    Health
    Reactivity
    0
    Specific hazard
    Personal Protection
    E
    WHMIS (Canada)
    (Pictograms)
    DSCL (Europe)
    (Pictograms)
    TDG (Canada)
    (Pictograms)
    ADR (Europe)
    (Pictograms)
    Protective Equipment
    Gloves.
    Potassium Thiosulfate
    Lab coat.
    Dust respirator. Be sure to use an
    approved/certified respirator or
    equivalent.

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SECTION 16 - ADDITIONAL INFORMATION
N/A