Material Safety Data Sheet

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Section 1. Identification of the substance
  4-(Difluoromethoxy)benzenesulfonyl chloride
    Product Name:
    Synonyms:

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Section 2. Hazards identification
    Harmful by inhalation, in contact with skin, and if swallowed.
    H314:        Causes severe skin burns and eye damage    
    P280:        Wear protective gloves/protective clothing/eye protection/face protection    
    P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present
    and easy to do – continue rinsing
    P310:        Immediately call a POISON CENTER or doctor/physician    

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Section 3. Composition/information on ingredients.
    Ingredient name:        4-(Difluoromethoxy)benzenesulfonyl chloride    
    CAS number:        351003-34-4    

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Section 4. First aid measures
    Skin contact:        Immediately wash skin with copious amounts of water for at least 15 minutes while removing    
    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
    This product should be handled only by, or under the close supervision of, those properly qualified
    Handling:
    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.    

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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
    Appearance:        Not specified    
    Boiling point:        No data    
    Melting point:        No data    
    Flash point:        No data    
    Density:        No data    
    Molecular formula: C7H5ClF2O3S
    Molecular weight: 242.6

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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 chloride, hydrogen fluoride, sulfur oxides.

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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:        UN3265 Class: 8 Packing group: II    
    Proper shipping name: CORROSIVE LIQUID, ACIDIC, ORGANIC, N.O.S. (4-(Difluoromethoxy)benzenesulfonyl chlo-
    ride)

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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