Material Safety Data Sheet

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Section 1. Identification of the substance
    Product Name:      3,4-Difluorophenylacetylene    
    Synonyms:

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Section 2. Hazards identification
    Harmful by inhalation, in contact with skin, and if swallowed.
    H225:        Highly flammable liquid and vapour    
    P210:        Keep away from heat/sparks/open flames/hot surfaces. No smoking    

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Section 3. Composition/information on ingredients.
    Ingredient name:        3,4-Difluorophenylacetylene    
    CAS number:        143874-13-9    

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Section 4. First aid measures
    Immediately wash skin with copious amounts of water for at least 15 minutes while removing
    Skin contact:
    contaminated clothing and shoes. If irritation persists, seek medical attention.
    Eye contact:        Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate    
    flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical
    attention.
    Inhalation:        Remove to fresh air. In severe cases or if symptoms persist, seek medical attention.    
    Ingestion:        Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.    

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Section 5. Fire fighting measures
    In the event of a fire involving this material, alone or in combination with other materials, use dry
    powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus
    should be worn.

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Section 6. Accidental release measures
    Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national
    standards.
    Respiratory precaution:        Wear approved mask/respirator    
    Hand precaution:        Wear suitable gloves/gauntlets    
    Skin protection:        Wear suitable protective clothing    
    Eye protection:        Wear suitable eye protection    
    Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container
    for disposal. See section 12.
    Environmental precautions: Do not allow material to enter drains or water courses.

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Section 7. Handling and storage
    Handling:        This product should be handled only by, or under the close supervision of, those properly qualified    
    in the handling and use of potentially hazardous chemicals, who should take into account the fire,
    health and chemical hazard data given on this sheet.
    Storage:        Store in closed vessels, refrigerated.    

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Section 8. Exposure Controls / Personal protection
    Engineering Controls: Use only in a chemical fume hood.
    Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles.
    General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse.

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Section 9. Physical and chemical properties
    Not specified
    Appearance:
    Boiling point:        No data    
    Melting point:        No data    
    Flash point:        No data    
    Density:        No data    
    Molecular formula:        C8H4F2    
    Molecular weight:        138.1    

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Section 10. Stability and reactivity
    Conditions to avoid: Heat, flames and sparks.
    Materials to avoid: Oxidizing agents.
    Possible hazardous combustion products: Carbon monoxide, hydrogen fluoride.

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Section 11. Toxicological information
    No data.

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Section 12. Ecological information
    No data.

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Section 13. Disposal consideration
    Arrange disposal as special waste, by licensed disposal company, in consultation with local waste
    disposal authority, in accordance with national and regional regulations.

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Section 14. Transportation information
    UN Number:        UN1993        Class: 3        Packing group: II    
    Proper shipping name: FLAMMABLE LIQUIDS, N.O.S. (3,4-Difluorophenylacetylene)

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Section 15. Regulatory information
    No chemicals in this material are subject to the reporting requirements of SARA Title III, Section
    302, or have known CAS numbers that exceed the threshold reporting levels established by SARA
    Title III, Section 313.

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SECTION 16 - ADDITIONAL INFORMATION
N/A