Valid 05/2001 - 07/2001

Aldrich Chemical Co., Inc.
1001 West St. Paul
Milwaukee, WI 53233 USA
Tel: 414-273-3850





             M A T E R I A L  S A F E T Y  D A T A  S H E E T
             
SECTION 1. - - - - - - - - - CHEMICAL IDENTIFICATION- - - - - - - - - -
    CATALOG #:            490237
    NAME:                 METHANE-D, 98 ATOM % D
SECTION 2. - - - - - COMPOSITION/INFORMATION ON INGREDIENTS - - - - - -
    CAS #:   676-49-3
    MF: CH3D
SECTION 3. - - - - - - - - - - HAZARDS IDENTIFICATION - - - - - - - - -
  LABEL PRECAUTIONARY STATEMENTS
    FLAMMABLE (USA)
    EXTREMELY FLAMMABLE (EU)
    DANGER: FLAMMABLE HIGH-PRESSURE GAS.
    KEEP AWAY FROM SOURCES OF IGNITION - NO SMOKING.
    IN CASE OF INSUFFICIENT VENTILATION, WEAR SUITABLE
    RESPIRATORY EQUIPMENT.
    CYLINDER TEMPERATURE SHOULD NOT EXCEED 125 F(52 C).
    DO NOT PUNCTURE OR INCINERATE THIS CYLINDER.
SECTION 4. - - - - - - - - - - FIRST-AID MEASURES- - - - - - - - - - -
    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.
SECTION 5. - - - - - - - - - FIRE FIGHTING MEASURES - - - - - - - - - -
  EXTINGUISHING MEDIA
    DO NOT EXTINGUISH BURNING GAS IF FLOW CANNOT BE SHUT OFF IMMEDIATELY.
    USE WATER SPRAY OR FOG NOZZLE TO KEEP CYLINDER COOL. MOVE CYLINDER
    AWAY FROM FIRE IF THERE IS NO RISK.
  SPECIAL FIREFIGHTING PROCEDURES
    WEAR SELF-CONTAINED BREATHING APPARATUS AND PROTECTIVE CLOTHING TO
    PREVENT CONTACT WITH SKIN AND EYES.
    DANGER: FLAMMABLE HIGH-PRESSURE GAS.
  UNUSUAL FIRE AND EXPLOSIONS HAZARDS
    VAPOR MAY TRAVEL CONSIDERABLE DISTANCE TO SOURCE OF IGNITION AND
    FLASH BACK.
    MAY FORM EXPLOSIVE MIXTURES WITH AIR.
SECTION 6. - - - - - - - - ACCIDENTAL RELEASE MEASURES- - - - - - - - -
    EVACUATE AREA AND KEEP PERSONNEL UPWIND.
    SHUT OFF ALL SOURCES OF IGNITION.
    WEAR SELF-CONTAINED BREATHING APPARATUS, RUBBER BOOTS AND HEAVY
    RUBBER GLOVES.
    SHUT OFF LEAK IF THERE IS NO RISK.
    VENTILATE AREA AND WASH SPILL SITE AFTER MATERIAL PICKUP IS COMPLETE.
SECTION 7. - - - - - - - - - - HANDLING AND STORAGE- - - - - - - - - - -
    REFER TO SECTION 8.
  ADDITIONAL INFORMATION
    WARNING: SUCK-BACK INTO CYLINDER MAY CAUSE RUPTURE.
    USE BACK-FLOW-PREVENTIVE DEVICE IN PIPING.
    USE WITH EQUIPMENT RATED FOR CYLINDER PRESSURE, AND OF COMPATIBLE
    MATERIALS OF CONSTRUCTION. CLOSE VALVE WHEN NOT IN USE AND WHEN EMPTY.
    MAKE SURE CYLINDER IS PROPERLY SECURED WHEN IN USE OR STORED.
    CYLINDER TEMPERATURE SHOULD NOT EXCEED 125 F(52 C).
    A FIRE OR EXPLOSION MAY RESULT WHEN METHANE COMES IN CONTACT WITH:
    FLUORINE, CHLORINE, BROMINE, IODINE, BROMINE PENTAFLUORIDE, CHLORINE
    TRIFLUORIDE, IODINE HEPTAFLUORIDE, LIQUID OXYGEN, TRIOXYGEN
    DIFLUORIDE, DIOXYGEN DIFLUORIDE OR DIOXYGENYL TETRAFLUOROBORATE.
SECTION 8. - - - - - - EXPOSURE CONTROLS/PERSONAL PROTECTION- - - - - -
    CHEMICAL SAFETY GOGGLES.
    COMPATIBLE CHEMICAL-RESISTANT GLOVES.
    MECHANICAL EXHAUST REQUIRED.
    NIOSH/MSHA-APPROVED RESPIRATOR IN NONVENTILATED AREAS AND/OR FOR
    EXPOSURE ABOVE THE ACGIH TLV.
    DO NOT BREATHE GAS.
    DO NOT GET IN EYES, ON SKIN, ON CLOTHING.
    AVOID PROLONGED OR REPEATED EXPOSURE.
    KEEP TIGHTLY CLOSED.
    KEEP AWAY FROM HEAT, SPARKS, AND OPEN FLAME.
    STORE AND USE WITH ADEQUATE VENTILATION.
    CONTENTS UNDER PRESSURE.
SECTION 9. - - - - - - - PHYSICAL AND CHEMICAL PROPERTIES - - - - - - -
  PHYSICAL PROPERTIES
    BOILING POINT:        -161 C
    MELTING POINT:      -183 C
SECTION 10. - - - - - - - - -STABILITY AND REACTIVITY - - - - - - - - -
  STABILITY
    STABLE.
  CONDITIONS TO AVOID
    AIR
  INCOMPATIBILITIES
    OXIDIZING AGENTS
    HALOGENS
  HAZARDOUS COMBUSTION OR DECOMPOSITION PRODUCTS
    CARBON MONOXIDE, CARBON DIOXIDE
  HAZARDOUS POLYMERIZATION
    WILL NOT OCCUR.
SECTION 11. - - - - - - - - - TOXICOLOGICAL INFORMATION - - - - - - - -
  ACUTE EFFECTS
    MAY BE HARMFUL IF INHALED.
    EXPOSURE CAN CAUSE:
    NAUSEA, HEADACHE AND VOMITING
  ADDITIONAL INFORMATION
    AT HIGH CONCENTRATIONS METHANE FUNCTIONS AS A SIMPLE ASPHYXIANT BY
    DISPLACING AIR.
SECTION 12. - - - - - - - - - ECOLOGICAL INFORMATION - - - - - - - - - -
    DATA NOT YET AVAILABLE.
SECTION 13. - - - - - - - - - DISPOSAL CONSIDERATIONS - - - - - - - - -
    CAUTION: NO-RETURN CYLINDER. DO NOT REUSE. EMPTY CYLINDER WILL CONTAIN
    HAZARDOUS RESIDUE. FOLLOW PROPER DISPOSAL TECHNIQUES.
    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.
    EXTREMELY FLAMMABLE
    R 12
    EXTREMELY FLAMMABLE.
    S 9
    KEEP CONTAINER IN A WELL-VENTILATED PLACE.
    S 16
    KEEP AWAY FROM SOURCES OF IGNITION - NO SMOKING.
    S 33
    TAKE PRECAUTIONARY MEASURES AGAINST STATIC DISCHARGES.
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 2001 SIGMA-ALDRICH CO.
    LICENSE GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY