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Section I.Chemical Product and Company Identification
    Chemical Name        Dimethyl Sulfoxide    
    [for Liquid Paraffin Test]
    Portland OR
    Synonym        DMSO    
    Chemical Formula        (CH3)2SO    
    CAS Number        67-68-5    

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Section II.        Composition and Information on Ingredients    
    Chemical Name        CAS Number Percent (%)        TLV/PEL        Toxicology Data    
    Dimethyl Sulfoxide        67-68-5        Min. 99.0        This chemical is classified as a        Rat LD50 (oral) 14.5gm/kg    
    [for Liquid Paraffin Test]
    (GC)        possible carcinogen. There is        Rat LD50 (dermal) 40gm/kg    
    no acceptible exposure limit        Mouse LD50 (oral) 7920/kg    
    for a carcinogen.        Mouse LD50 (dermal) 50gm/kg    

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Section III. Hazards Identification
    Acute Health Effects        Irritating to eyes and skin on contact. Inhalation causes irritation of the lungs and respiratory system. Inflammation of the    
    eye is characterized by redness, watering, and itching. Skin inflammation is characterized by itching, scaling, reddening,
    or, occasionally, blistering. Skin contact may result in sensitization. Always cover all exposed skin with an impermeable
    layer and use proper eye protection. A OSHA/MSHA approved dust and vapor respirator is required when working with
    this material. Follow safe industrial hygiene practices and always wear proper protective equipment when handling this
    compound.
    Chronic Health Effects        CARCINOGENIC EFFECTS : Equivocal tumorigenic agent by RTECS criteria. Causes luekemia, and lung and skin    
    tumors when applied to rats and mice.
    MUTAGENIC EFFECTS : Shown to be mutagenic in animal trials.
    TERATOGENIC EFFECTS : Not available.
    Toxicity to the reproductive system: Serious reproductive hazard including developmental abnormalities an d fetotoxicity.
    Repeated or prolonged exposure to the substance can produce target organs damage. Repeated or prolonged
    inhalation of vapors may lead to chronic respiratory irritation.

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Section IV.        First Aid Measures    
    Eye Contact        Check for and remove any contact lenses. DO NOT use an eye ointment. Flush eyes with running water for a minimum    
    of 15 minutes, occasionally lifting the upper and lower eyelids. Seek medical attention. Treat symptomatically and
    supportively.
    Skin Contact
    If the chemical gets spilled on a clothed portion of the body, remove the contaminated clothes as quickly as possible,
    protecting your own hands and body. Place the victim under a deluge shower. If the chemical touches the victim's
    exposed skin, such as the hands: Gently and thoroughly wash the contaminated skin with running water and non-abrasive
    soap. Be particularly careful to clean folds, crevices, creases and groin. Cover the irritated skin with an emollient. Seek
    medical attention. Treat symptomatically and supportively. Wash any contaminated clothing before reusing.
    If the victim is not breathing, perform artificial respiration. Loosen tight clothing such as a collar, tie, belt or waistband. If
    Inhalation
    breathing is difficult, oxygen can be administered. Seek medical attention. Treat symptomatically and supportively.
    Ingestion        Remove dentures if any. Have conscious person drink several glasses of water or milk. INDUCE VOMITING by sticking    
    finger in throat. Lower the head so that the vomit will not reenter the mouth and throat. NEVER give an unconscious
    person anything to ingest. Seek medical attention. Treat symptomatically and supportively.

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Section V. Fire and Explosion Data
    303°C (577.4°F)
    Flammability        Combustible.        Auto-Ignition    
    Flammable Limits
    Flash Points        95°C (203°F)        LOWER: 3.5%    
    UPPER: 42%
    Combustion Products        These products are toxic carbon oxides (CO, CO 2), sulfur oxides (SO2, SO3...).    
    Fire Hazards
    Combustible in presence of heat, open flames and sparks.
    Continued on Next Page
    Dimethyl Sulfoxide
    [for Liquid Paraffin Test]
    Explosion Hazards        Risks of explosion of the product in presence of mechanical impact: Not available.    
    Risks of explosion of the product in presence of static discharge: Not available.
    No additional information is available regarding the risks of explosion.
    Fire Fighting Media
    SMALL FIRE: Use DRY chemicals, CO 2, water spray or foam.
    and Instructions        LARGE FIRE: Use water spray, fog or foam. DO NOT use water jet.    

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Section VI.        Accidental Release Measures    
    Spill Cleanup
    Combustible material.
    Keep away from heat. Keep away from sources of ignition. Stop leak if without risk. If the product is in its solid form:
    Instructions
    Use a shovel to put the material into a convenient waste disposal container. If the product is in its liquid form: Absorb
    with an inert material and put the spilled material in an appropriate waste disposal. Finish cleaning the spill by rinsing any
    contaminated surfaces with copious amounts of water.

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Section VII. Handling and Storage
    IRRITANT. Hygroscopic -- store in a tightly sealed container in a desiccator if possible. Keep away from heat and
    Handling and Storage
    sources of ignition. Empty containers pose a fire risk, evaporate the residue under a fume hood. Ground all equipment
    Information
    containing material. DO NOT ingest. SENSITIZER AND IRRITANT--Do not breathe gas, fumes, vapor or spray. In case
    of insufficient ventilation, wear suitable respiratory equipment. If ingested, seek medical advice immediately and show the
    container or the label. Avoid contact with skin and eyes.
    Always store away from incompatible compounds such as oxidizing agents, reducing agents, acids, and phosphorus
    halides.
    WARNING: Undergoes a violent exothermic reaction when mixed with copper wool and trichloroacetic acid. On mixing
    with potassium permanganate, it will flash instantly. Reacts violently with acid halides, cyanuric chloride, silicon
    tetrachloride, phosphorus trichloride and trioxide, magnesium perchlorate, silver fluoride, methyl bromide, iodine
    pentafluoride, nitrogen periodate, diborane, sodium hydride, perchloric and periodic acids. When heated above it's
    boiling point, toxic formaldehyde, methyl mercaptan, and sulfur dioxide vapors are released.

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Section VIII. Exposure Controls/Personal Protection
    Engineering Controls        Provide exhaust ventilation or other engineering controls to keep the airborne concentrations of vapors below their    
    respective threshold limit value. Ensure that eyewash station and safety shower is proximal to the work-station location.
    Personal Protection        Splash goggles. Lab coat. Vapor respirator. Boots. Gloves. A MSHA/NIOSH approved respirator should be used to    
    avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE
    handling this product.
    Exposure Limits        This chemical is classified as a possible carcinogen. There is no acceptible exposure limit for a carcinogen.    

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Section IX. Physical and Chemical Properties
    Physical state @ 20°C        Liquid.        Solubility    
    Easily soluble in cold water, hot water,
    methanol, diethyl ether, n-octanol,
    1.101 (Water = 1)        acetone.    
    Specific Gravity
    Molecular Weight        78.14        Partition Coefficient    
    -2.03
    Boiling Point        189°C (372.2°F)        Vapor Pressure        0.42 mm of Hg (@ 20°C)    
    18.4°C (65.1°F)        2.7 (Air = 1)    
    Melting Point        Vapor Density    
    1.4795 @ 20°C        Not available.    
    Refractive Index        Volatility    
    Not available.
    Critical Temperature        Not available.        Odor    
    Viscosity        1.1 centipoise @ 27°C        Taste        Not available.    

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Section X.        Stability and Reactivity Data    
    Stability    

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This material is stable if stored under proper conditions. (See Section VII for instructions)    
    Conditions of Instability
    Avoid excessive heat and light.
    Incompatibilities
    Highly reactive with oxidizing agents, reducing agents, acids, and phosphorus halides.
    WARNING: Undergoes a violent exothermic reaction when mixed with copper wool and trichloroacetic acid. On mixing
    with potassium permanganate, it will flash instantly. Reacts violently with acid halides, cyanuric chloride, silicon
    tetrachloride, phosphorus trichloride and trioxide, magnesium perchlorate, silver fluoride, methyl bromide, iodine
    pentafluoride, nitrogen periodate, diborane, sodium hydride, perchloric and periodic acids. When heated above it's
    boiling point, toxic formaldehyde, methyl mercaptan, and sulfur dioxide vapors are released.
    Continued on Next Page
    Dimethyl Sulfoxide
    [for Liquid Paraffin Test]

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Section XI.        Toxicological Information    
    RTECS Number        PV6210000    
    Routes of Exposure        Ingestion. Inhalation. Eye contact. Skin contact.    
    Rat LD50 (oral) 14.5gm/kg
    Toxicity Data
    Rat LD50 (dermal) 40gm/kg
    Mouse LD50 (oral) 7920/kg
    Mouse LD50 (dermal) 50gm/kg
    Chronic Toxic Effects        CARCINOGENIC EFFECTS : Equivocal tumorigenic agent by RTECS criteria. Causes luekemia, and lung and skin    
    tumors when applied to rats and mice.
    MUTAGENIC EFFECTS : Shown to be mutagenic in animal trials.
    TERATOGENIC EFFECTS : Not available.
    Toxicity to the reproductive system: Serious reproductive hazard including developmental abnormalities an d fetotoxicity.
    Repeated or prolonged exposure to the substance can produce target organs damage. Repeated or prolonged inhalation
    of vapors may lead to chronic respiratory irritation.
    Acute Toxic Effects        Irritating to eyes and skin on contact. Inhalation causes irritation of the lungs and respiratory system. Inflammation of the    
    eye is characterized by redness, watering, and itching. Skin inflammation is characterized by itching, scaling, reddening,
    or, occasionally, blistering. Skin contact may result in sensitization. Always cover all exposed skin with an impermeable
    layer and use proper eye protection. A OSHA/MSHA approved dust and vapor respirator is required when working with
    this material. Follow safe industrial hygiene practices and always wear proper protective equipment when handling this
    compound.

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

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Section XIII. Disposal Considerations
    Recycle to process, if possible. Consult your local or regional authorities. You may be able to dissolve or mix material with
    Waste Disposal
    a 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 this substance.

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Section XIV. Transport Information
    DOT Classification
    Not a DOT controlled material (United States).
    PIN Number        NONE    
    Proper Shipping Name        Not available.    
    Packing Group (PG)        NONE    
    DOT Pictograms

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Section XV. Other Regulatory Information and Pictograms
    TSCA Chemical Inventory        This product is ON the Toxic Substances Control Act (TSCA) list.    
    (EPA)
    WHMIS Classification        WHMIS CLASS D-2B: Material causing other toxic effects (TOXIC).    
    (Canada)
    EINECS Number (EEC) 200-664-3
    EEC Risk Statements
    20/21/22- Harmful by inhalation, in contact with skin and if swallowed.
    36/37/38- Irritating to eyes, respiratory system and skin.
    42/43- May cause sensitization by inhalation and skin contact.
    Japanese Regulatory Data
    Dimethyl Sulfoxide
    [for Liquid Paraffin Test]
    TCI laboratory chemicals are for research purposes only and are NOT intended for use as drugs, food additives, households, or pesticides. The information herein is believed to be correct, but does not
    claim to be all inclusive and should be used only as a guide. Neither the above named supplier nor any of its subsidiaries assumes any liability whatsoever for the accuracy or completeness of the
    information contained herein. Final determination of suitability of any material is the sole responsibility of the user. All chemical reagents must be handled with the recognition that their chemical,
    physiological, toxicological, and hazardous properties have not been fully investigated or determined. All chemical reagents should be handled only by individuals who are familiar with their potential
    hazards and who have been fully trained in proper safety, laboratory, and chemical handling procedures. Although certain hazards are described herein, we can not guarantee that these are the only hazards
    which exist. Our MSDS sheets are based only on data available at the time of shipping and are subject to change without notice as new information is obtained. Avoid long storage periods since the
    product is subject to degradation with age and may become more dangerous or hazardous. It is the responsibility of the user to request updated MSDS sheets for products that are stored for extended
    periods. Disposal of unused product must be undertaken by qualified personnel who are knowledgeable in all applicable regulations and follow all pertinent safety precautions including the use of
    appropriate protective equipment (e.g. protective goggles, protective clothing, breathing equipment, facial mask, fume hood). For proper handling and disposal, always comply with federal, state, and local
    regulations.

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SECTION 16 - ADDITIONAL INFORMATION
N/A