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Section 1. Chemical Product and Company Identification
    Methyl orange
    Common Name/
    Trade Name
    Methyl orange

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Section 3. Hazards Identification
    Potential Acute Health        Hazardous in case of ingestion. Slightly hazardous in case of skin contact (irritant), of eye contact (irritant),    
    Effects        of inhalation. Severe over-exposure can result in death.    
    CARCINOGENIC EFFECTS: Not available.
    Potential Chronic Health
    MUTAGENIC EFFECTS: Mutagenic for bacteria and/or yeast.
    Effects
    TERATOGENIC EFFECTS: Not available.
    DEVELOPMENTAL TOXICITY: Not available.
    Repeated exposure to a highly toxic material may produce general deterioration of health by an
    accumulation in one or many human organs.

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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. WARM water MUST be used. Get medical attention if
    irritation occurs.
    Skin Contact        Wash with soap and water. Cover the irritated skin with an emollient. Get medical attention if irritation    
    develops.
    Serious Skin Contact        Not available.    
    Inhalation        If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.    
    Get medical attention.
    Serious Inhalation        Evacuate the victim to a safe area as soon as possible. Loosen tight clothing such as a collar, tie, belt or    
    waistband. If breathing is difficult, administer oxygen. If the victim is not breathing, perform mouth-to-mouth
    resuscitation. Seek medical attention.
    Ingestion        If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by    
    mouth to an unconscious person. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical
    attention immediately.
    Not available.
    Serious Ingestion

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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.
    Not available.
    Flash Points
    Not available.
    Flammable Limits
    These products are carbon oxides (CO, CO2), nitrogen oxides (NO, NO2...). Some metallic oxides.
    Products of Combustion
    Fire Hazards in Presence of Slightly flammable to flammable in presence of heat.
    Non-flammable in presence of shocks.
    Various Substances
    Risks of explosion of the product in presence of mechanical impact: Not available.
    Explosion Hazards in
    Risks of explosion of the product in presence of static discharge: Not available.
    Presence of Various
    Substances
    Fire Fighting Media        SMALL FIRE: Use DRY chemical powder.    
    and Instructions        LARGE FIRE: Use water spray, fog or foam. Do not use water jet.    
    As with most organic solids, fire is possible at elevated temperatures or by contact with an ignition source.
    Special Remarks on
    Fire Hazards
    Special Remarks on Explosion Fine dust dispersed in air in sufficient concentrations, and in the presences of an ignition source is a
    potential dust explosion hazard.
    Hazards
    Methyl orange

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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.    
    Large Spill        Poisonous solid.    
    Stop leak if without risk. Do not get water inside container. Do not touch spilled material. Use water spray
    to reduce vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Eliminate all

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Section 7. Handling and Storage
    Keep away from heat. Keep away from sources of ignition. Ground all equipment containing material. Do
    Precautions
    not ingest. Do not breathe dust. Wear suitable protective clothing. 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. Keep away from incompatibles such as oxidizing agents.
    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
    a Large Spill        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 9. Physical and Chemical Properties
    Physical state and appearance Solid. (Powdered solid.)        Odor        Odorless.    
    Not available.
    Taste
    327.34 g/mole
    Molecular Weight
    Color        Orange-Yellow.    
    pH (1% soln/water)        Not available.    
    Boiling Point        Not available.    
    Melting Point        >300°C (572°F)    
    Not available.
    Critical Temperature
    Specific Gravity        Not available.    
    Not applicable.
    Vapor Pressure
    Vapor Density        Not available.    
    Volatility        Not available.    
    Odor Threshold        Not available.    
    Water/Oil Dist. Coeff.        Not available.    
    Not available.
    Ionicity (in Water)
    Dispersion Properties        Not available.    
    Partially soluble in hot water.
    Solubility
    Very slightly soluble in cold water.
    Insoluble in diethyl ether.
    Practically insoluble in alcohol.
    Soluble in Pyrimidine.
    Methyl orange

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

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Section 11. Toxicological Information
    Routes of Entry        Inhalation. Ingestion.    
    Toxicity to Animals        Acute oral toxicity (LD50): 60 mg/kg [Rat].    
    Chronic Effects on Humans MUTAGENIC EFFECTS: Mutagenic for bacteria and/or yeast.
    Other Toxic Effects on        Hazardous in case of ingestion.    
    Humans        Slightly hazardous in case of skin contact (irritant), of inhalation.    
    Special Remarks on        Not available.    
    Toxicity to Animals
    Special Remarks on        May affect genetic material (mutagenic)    
    Chronic Effects on Humans
    Special Remarks on other        Acute Potential Health Effects:    
    Toxic Effects on Humans        Skin: May cause skin irritation.    
    Eyes: Dust may cause eye irritation. This product contains an anionic dye. Similar dyes have not caused
    injury to the cornea or conjunctiva in documented exposure cases with human or rabbit eyes.
    Inhalation: Dust may cause respiratory tract irritation,
    Ingestion: Harmful if swallowed. May cause gastrointestinal tract irritation with nausea, vomiting, and
    diarrhea.
    The toxicological properties of this substance have not been fully investigated.

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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 products of degradation are less toxic than the product itself.    
    of Biodegradation
    Special Remarks on the        Not available.    
    Products of Biodegradation
    Methyl orange

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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        CLASS 6.1: Poisonous material.    
    UNNA: 3143 : Dye, solid, toxic, n.o.s. (Methyl orange) PG: III
    Identification
    Not available.
    Special Provisions for
    Transport
    DOT (Pictograms)

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Section 15. Other Regulatory Information and Pictograms
    TSCA 8(b) inventory: Methyl orange
    Federal and State
    Regulations
    California        California prop. 65: This product contains the following ingredients for which the State of California has    
    Proposition 65        found to cause cancer which would require a warning under the statute: No products were found.    
    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.
    OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).
    Other Regulations
    EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances (EINECS
    No. 208-925-3).
    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.
    WHMIS (Canada) CLASS D-1B: Material causing immediate and serious toxic effects (TOXIC).
    Other Classifications
    DSCL (EEC)        R25- Toxic if swallowed.        S45- In case of accident or if you feel unwell,    
    seek medical advice immediately (show the
    label where possible).
    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)
    Methyl orange
    TDG (Canada)
    (Pictograms)
    ADR (Europe)
    (Pictograms)
    Protective Equipment
    Gloves.
    Lab coat.
    Dust respirator. Be sure to use an
    approved/certified respirator or
    equivalent.

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SECTION 16 - ADDITIONAL INFORMATION
N/A