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Section I.Chemical Product and Company Identification
    Chemical Name 1,2-Ethanedisulfonic Acid, Dihydrate
    Portland OR
    Synonym        1,2-Ethanedisulfonic acid (CA INDEX)    
    C2H6O6S2. 2H2O
    Chemical Formula
    110-04-3
    CAS Number

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Section II.        Composition and Information on Ingredients    
    Toxicology Data
    Chemical Name        CAS Number Percent (%)        TLV/PEL    
    1,2-Ethanedisulfonic Acid, Dihydrate        110-04-3        Min. 95.0 (T) Not available.        Not available.    

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Section III. Hazards Identification
    Acute Health Effects        Corrosive to eyes and skin. The amount of tissue damage depends on length of contact. Eye contact can result in corneal    
    damage or blindness. Skin contact can produce inflammation and blistering. Inhalation of dust will produce irritation to
    gastro-intestinal or respiratory tract, characterized by burning, sneezing and coughing. Severe over-exposure can produce
    lung damage, choking, unconsciousness or death.
    Harmful if ingested or inhaled. Minimize exposure to this material. Severe overexposure can result in injury or death.
    Follow safe industrial hygiene practices and always wear proper protective equipment when handling this compound.
    Chronic Health Effects        CARCINOGENIC EFFECTS : Not available.    
    MUTAGENIC EFFECTS : Not available.
    TERATOGENIC EFFECTS : Not available.
    DEVELOPMENTAL TOXICITY: Not available.
    Repeated exposure of the eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local
    skin destruction, or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung
    damage.

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Section IV.        First Aid Measures    
    Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15
    Eye Contact
    minutes. Get medical attention.
    In case of contact, immediately flush skin with plenty of water. Remove contaminated clothing and shoes. Wash clothing
    Skin Contact
    before reuse. Thoroughly clean shoes before reuse. Get medical attention.
    If the victim is not breathing, perform mouth-to-mouth resuscitation. Loosen tight clothing such as a collar, tie, belt or
    Inhalation
    waistband. If breathing is difficult, oxygen can be administered. Seek medical attention if respiration problems do not
    improve.
    Ingestion        DO NOT INDUCE VOMITING. Loosen tight clothing such as a collar, tie, belt or waistband. If the victim is not breathing,    
    perform mouth-to-mouth resuscitation. Examine the lips and mouth to ascertain whether the tissues are damaged, a possible
    indication that the toxic material was ingested; the absence of such signs, however, is not conclusive.

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Section V.        Fire and Explosion Data    
    Not available.
    May be combustible at high temperature.        Auto-Ignition    
    Flammability
    Flash Points        Flammable Limits        Not available.    
    Not available.
    These products are toxic carbon oxides (CO, CO2), sulfur oxides (SO2, SO3...).
    Combustion Products
    Fire Hazards
    Not available.
    Risks of explosion of the product in presence of mechanical impact: Not available.
    Explosion Hazards
    Risks of explosion of the product in presence of static discharge: Not available.
    Fire Fighting Media
    SMALL FIRE: Use DRY chemical powder.
    LARGE FIRE: Use water spray, fog or foam. DO NOT use water jet.
    and Instructions
    Consult with local fire authorities before attempting large scale fire-fighting operations.
    Continued on Next Page
    1,2-Ethanedisulfonic Acid, Dihydrate

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Section VI.        Accidental Release Measures    
    Spill Cleanup        Corrosive material. Harmful material. Hygroscopic material.    
    Stop leak if without risk. DO NOT get water inside container. DO NOT touch spilled material. Use water spray to reduce
    Instructions
    vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Eliminate all sources of ignition. Consult
    federal, state, and/or local authorities for assistance on disposal.

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Section VII. Handling and Storage
    CORROSIVE. HARMFUL. HYGROSCOPIC. Keep container dry. Keep away from heat. Mechanical exhaust required.
    Handling and Storage
    When not in use, tightly seal the container and store in a dry, cool place. Avoid excessive heat and light. Do not breathe
    Information
    dust. Never add water to this product. Wear suitable protective clothing. If you feel unwell, seek medical attention and show
    the label when possible. Treat symptomatically and supportively.
    Always store away from incompatible compounds such as oxidizing agents, alkalis (bases), moisture.

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Section VIII. Exposure Controls/Personal Protection
    Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below recommended
    Engineering Controls
    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. Gloves. A MSHA/NIOSH approved respirator must be used 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 IX. Physical and Chemical Properties
    Solid. (Light grey~yellowish-grey        Solubility    
    Physical state @ 20°C        Very soluble in: Dioxane. Soluble in:    
    crystalline powder and small granular        Ethanol, Ether, Water.    
    solid)
    Not available.
    Specific Gravity
    190.2 (Anh)
    Molecular Weight        Partition Coefficient        Not available.    
    Boiling Point        Not available.        Vapor Pressure        Not applicable.    
    112°C (233.6°F)        Not available.    
    Melting Point        Vapor Density    
    Refractive Index        Not available.        Volatility        Not available.    
    Not available.        Not available.    
    Critical Temperature        Odor    
    Viscosity        Not available.        Taste        Not available.    

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Section X.        Stability and Reactivity Data    

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This material is stable if stored under proper conditions. (See Section VII for instructions)
    Stability
    Conditions of Instability        Avoid excessive heat and light.    
    Incompatibilities
    Highly reactive with oxidizing agents, alkalis (bases), moisture.

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Section XI. Toxicological Information
    Not available.
    RTECS Number
    Routes of Exposure        Eye Contact. Ingestion. Inhalation.    
    Not available.
    Toxicity Data
    Chronic Toxic Effects        CARCINOGENIC EFFECTS : Not available.    
    MUTAGENIC EFFECTS : Not available.
    TERATOGENIC EFFECTS : Not available.
    DEVELOPMENTAL TOXICITY: Not available.
    Repeated exposure of the eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local
    skin destruction, or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung
    damage.
    Acute Toxic Effects        Corrosive to eyes and skin. The amount of tissue damage depends on length of contact. Eye contact can result in corneal    
    damage or blindness. Skin contact can produce inflammation and blistering. Inhalation of dust will produce irritation to
    gastro-intestinal or respiratory tract, characterized by burning, sneezing and coughing. Severe over-exposure can produce
    lung damage, choking, unconsciousness or death.
    Harmful if ingested or inhaled. Minimize exposure to this material. Severe overexposure can result in injury or death.
    Follow safe industrial hygiene practices and always wear proper protective equipment when handling this compound.
    Continued on Next Page
    1,2-Ethanedisulfonic Acid, Dihydrate

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Section XII.        Ecological Information    
    Ecotoxicity        Not available.    
    Not available.
    Environmental Fate

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Section XIII. Disposal Considerations
    Recycle to process, if possible. Consult your local regional authorities. You may be able to dissolve or mix material with a
    Waste Disposal
    combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber system. Observe all
    federal, state and local regulations when disposing of the substance.

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Section XIV. Transport Information
    DOT Classification        DOT Class 8: Corrosive material    
    PIN Number
    Proper Shipping Name        Alkylsulphonic acids, solid    
    III
    Packing Group (PG)
    DOT Pictograms

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Section XV. Other Regulatory Information and Pictograms
    TSCA Chemical Inventory        This product is NOT on the EPA Toxic Substances Control Act (TSCA) inventory. The following notices are required by 40    
    CFR 720.36 (C) for those products not on the inventory list:
    (EPA)
    (i) These products are supplied solely for use in research and development by or under the supervision of a technically
    qualified individual as defined in 40 CFR 720.0 et sec.
    (ii) The health risks of these products have not been fully determined. Any information that is or becomes available will be
    supplied on an MSDS sheet.
    WHMIS Classification        On DSL.    
    (Canada)
    EINECS Number (EEC) 203-732-0
    EEC Risk Statements        R34- Causes burns.    
    R20/21/22- Harmful by inhalation, in contact with skin and if swallowed.

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SECTION 16 - ADDITIONAL INFORMATION
N/A