PRODUCT #: 371289       NAME: 2-BROMO-3-METHYL-2-BUTENE, 96%

                     MATERIAL SAFETY DATA SHEET, Valid 11/97 - 1/98

                          Printed Monday, March 10, 1903 3:00PM



Sigma Chemical Co.         Aldrich Chemical Co., Inc.     Fluka Chemical Corp.

P.O. Box 14508             1001 West St. Paul             1001 West St. Paul

St. Louis, MO 63178        Milwaukee, WI 53233            Milwaukee, WI 53233

Phone: 314-771-5765        Phone: 414-273-3850            Phone: 414-273-3850









SECTION 1. - - - - - - - - - CHEMICAL IDENTIFICATION- - - - - - - - - -

    CATALOG #:             371289

    NAME:                  2-BROMO-3-METHYL-2-BUTENE, 96%

SECTION 2. - - - - - COMPOSITION/INFORMATION ON INGREDIENTS - - - - - -

    CAS #: 3017-70-7

    MF: C5H9BR

SECTION 3. - - - - - - - - - - HAZARDS IDENTIFICATION - - - - - - - - -

    DATA NOT AVAILABLE

SECTION 4. - - - - - - - - - - FIRST-AID MEASURES- - - - - - - - - - -

    IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES WITH COPIOUS AMOUNTS OF

    WATER FOR AT LEAST 15 MINUTES.

    FLUSH SKIN WITH WATER.

    IF INHALED, REMOVE TO FRESH AIR. IF NOT BREATHING GIVE ARTIFICIAL

    RESPIRATION. IF BREATHING IS DIFFICULT, GIVE OXYGEN.

    IF SWALLOWED, WASH OUT MOUTH WITH WATER PROVIDED PERSON IS CONSCIOUS.

    CALL A PHYSICIAN.

    WASH CONTAMINATED CLOTHING BEFORE REUSE.

SECTION 5. - - - - - - - - - FIRE FIGHTING MEASURES - - - - - - - - - -

  EXTINGUISHING MEDIA

    CARBON DIOXIDE, DRY CHEMICAL POWDER OR APPROPRIATE FOAM.

    WATER MAY BE EFFECTIVE FOR COOLING, BUT MAY NOT EFFECT EXTINGUISHMENT.

  SPECIAL FIREFIGHTING PROCEDURES

    WEAR SELF-CONTAINED BREATHING APPARATUS AND PROTECTIVE CLOTHING TO

    PREVENT CONTACT WITH SKIN AND EYES.

    USE WATER SPRAY TO COOL FIRE-EXPOSED CONTAINERS.

    EXTREMELY FLAMMABLE.

  UNUSUAL FIRE AND EXPLOSIONS HAZARDS

    VAPOR MAY TRAVEL CONSIDERABLE DISTANCE TO SOURCE OF IGNITION AND

    FLASH BACK.

    CONTAINER EXPLOSION MAY OCCUR UNDER FIRE CONDITIONS.

    FORMS EXPLOSIVE MIXTURES IN AIR.

    EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

SECTION 6. - - - - - - - - ACCIDENTAL RELEASE MEASURES- - - - - - - - -

    EVACUATE AREA.

    SHUT OFF ALL SOURCES OF IGNITION.

    WEAR SELF-CONTAINED BREATHING APPARATUS, RUBBER BOOTS AND HEAVY

    RUBBER GLOVES.

    COVER WITH AN ACTIVATED CARBON ADSORBENT, TAKE UP AND PLACE IN CLOSED

    CONTAINERS. TRANSPORT OUTDOORS.

    USE NONSPARKING TOOLS.

    VENTILATE AREA AND WASH SPILL SITE AFTER MATERIAL PICKUP IS COMPLETE.

SECTION 7. - - - - - - - - - - HANDLING AND STORAGE- - - - - - - - - - -

    REFER TO SECTION 8.

SECTION 8. - - - - - - EXPOSURE CONTROLS/PERSONAL PROTECTION- - - - - -

    CHEMICAL SAFETY GOGGLES.

    NIOSH/MSHA-APPROVED RESPIRATOR.

    RUBBER GLOVES.

    MECHANICAL EXHAUST REQUIRED.

    DO NOT BREATHE VAPOR.



                                          Page 1

              PRODUCT #: 371289       NAME: 2-BROMO-3-METHYL-2-BUTENE, 96%

                     MATERIAL SAFETY DATA SHEET, Valid 11/97 - 1/98

                          Printed Monday, March 10, 1903 3:00PM



    DO NOT GET IN EYES, ON SKIN, ON CLOTHING.

    AVOID PROLONGED OR REPEATED EXPOSURE.

    WASH THOROUGHLY AFTER HANDLING.

    KEEP TIGHTLY CLOSED.

    KEEP AWAY FROM HEAT, SPARKS, AND OPEN FLAME.

    PROTECT FROM LIGHT.

    STORE IN A COOL DRY PLACE.

SECTION 9. - - - - - - - PHYSICAL AND CHEMICAL PROPERTIES - - - - - - -

  APPEARANCE AND ODOR

    LIGHT YELLOW LIQUID

  PHYSICAL PROPERTIES

    BOILING POINT:        40 C/75MM.

    FLASHPOINT                  77 F

                                24C

    SPECIFIC GRAVITY:     1.284

SECTION 10. - - - - - - - - -STABILITY AND REACTIVITY - - - - - - - - -

  INCOMPATIBILITIES

    STRONG OXIDIZING AGENTS

    STRONG BASES

    SENSITIVE TO LIGHT

  HAZARDOUS COMBUSTION OR DECOMPOSITION PRODUCTS

    TOXIC FUMES OF:

    CARBON MONOXIDE, CARBON DIOXIDE

    HYDROGEN BROMIDE GAS

SECTION 11. - - - - - - - - - TOXICOLOGICAL INFORMATION - - - - - - - -

  ACUTE EFFECTS

    MAY BE HARMFUL BY INHALATION, INGESTION, OR SKIN ABSORPTION.

    MAY CAUSE EYE IRRITATION.

    MAY CAUSE SKIN IRRITATION.

    TO THE BEST OF OUR KNOWLEDGE, THE CHEMICAL, PHYSICAL, AND

    TOXICOLOGICAL PROPERTIES HAVE NOT BEEN THOROUGHLY INVESTIGATED.

SECTION 12. - - - - - - - - - ECOLOGICAL INFORMATION - - - - - - - - - -

    DATA NOT YET AVAILABLE.

SECTION 13. - - - - - - - - - DISPOSAL CONSIDERATIONS - - - - - - - - -

    BURN IN A CHEMICAL INCINERATOR EQUIPPED WITH AN AFTERBURNER AND

    SCRUBBER BUT EXERT EXTRA CARE IN IGNITING AS THIS MATERIAL IS HIGHLY

    FLAMMABLE.

    OBSERVE ALL FEDERAL, STATE AND LOCAL ENVIRONMENTAL REGULATIONS.

SECTION 14. - - - - - - - - - - TRANSPORT INFORMATION - - - - - - - - -

    CONTACT ALDRICH CHEMICAL COMPANY FOR TRANSPORTATION INFORMATION.

SECTION 15. - - - - - - - - - REGULATORY INFORMATION - - - - - - - - - -

  EUROPEAN INFORMATION

    CAUTION: SUBSTANCE NOT YET FULLY TESTED.

SECTION 16. - - - - - - - - - - OTHER INFORMATION- - - - - - - - - - - -

    THE ABOVE INFORMATION IS BELIEVED TO BE CORRECT BUT DOES NOT PURPORT TO

    BE ALL INCLUSIVE AND SHALL BE USED ONLY AS A GUIDE. SIGMA, ALDRICH,

    FLUKA SHALL NOT BE HELD LIABLE FOR ANY DAMAGE RESULTING FROM HANDLING

    OR FROM CONTACT WITH THE ABOVE PRODUCT. SEE REVERSE SIDE OF INVOICE OR

    PACKING SLIP FOR ADDITIONAL TERMS AND CONDITIONS OF SALE.

    COPYRIGHT 1997 SIGMA CHEMICAL CO., ALDRICH CHEMICAL CO., INC.,

    FLUKA CHEMIE AG

    LICENSE GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY









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