MATERIAL SAFETY DATA SHEET

PRODUCT NAME: MAPLLC NORMAL BUTANE
MARATHON MSDS NO: 0105MAR019


1. Chemical Product and Company Information

9. Physical and Chemical Properties

2. Composition / Information on Ingredients

10. Stability and Reactivity

3. Hazards Identification

11. Toxicological Information

4. First Aid Measures

12. Ecological Information

5. Fire Fighting Measures

13. Disposal Considerations

6. Accidental Release Measures

14. Transportation Information

7. Handling and Storage

15. Regulatory Information

8. Exposure Control / Personal Protection

16. Other Information


1. CHEMICAL PRODUCT AND COMPANY INFORMATION


PRODUCT NAME:                                MANUFACTURER / DISTRIBUTOR:
 MAPLLC NORMAL BUTANE                         MARATHON ASHLAND PETROLEUM LLC
                                              539 SOUTH MAIN STREET
SYNONYMS:                                     FINDLAY OH 45840
MAPLLC NORMAL BUTANE; NORMAL BUTANE,
MAPLLC                                       EMERGENCY PHONE NUMBERS:
                                              (877)627-5463
                                              (800)424-9300

CHEM FAMILY:  ALIPHATIC HYDROCARBON          MSDS INFORMATION: (419)421-3070
CHEM FORMULA: CH3CH2CH2CH3
PRODUCT CODE: NONE                           MSDS REVISION DATE: 06/16/1999

INFORMATION SUPPLIED BY: CRAIG M. PARKER
                         MANAGER, TOXICOLOGY AND PRODUCT SAFETY


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2. COMPOSITION / INFORMATION ON INGREDIENTS

PRODUCT INFORMATION:

MAPLLC NORMAL BUTANE (CAS # 106-97-8) IS A/AN
  ALIPHATIC PETROLEUM HYDROCARBON.


                                              PERCENT RANGE  CAS NUMBER
                                              -------------  ---------------
COMPONENTS:
NORMAL BUTANE                                > 95.00         106-97-8

PENTANE & HEAVIER                            <  2.00         MIXTURE

ISO-BUTANE                                      1.00-  4.00  75-28-5

PROPYLENE                                       0.40-  2.00  115-07-1


EXPOSURE GUIDELINES

                                          LIMIT           TYPE      SOURCE
                                    ------------------- --------- ----------
PRODUCT:

MAPLLC NORMAL BUTANE                  800.00 PPM        8 HR TWA  ACGIH
                                      800.00 PPM        8 HR TWA  OSHA

COMPONENTS:

NORMAL BUTANE                         800.00 PPM        8 HR TWA  ACGIH
                                      800.00 PPM        8 HR TWA  OSHA*
  *  THE MANUFACTURER HAS VOLUNTARILY ELECTED
  TO REFLECT EXPOSURE LIMITS CONTAINED IN
  OSHA'S 1989 AIR CONTAMINANTS STANDARD IN ITS
  MSDS'S, EVEN THOUGH CERTAIN OF THOSE EXPOSURE
  LIMITS WERE VACATED IN 1992.

PENTANE & HEAVIER                   NONE ESTABLISHED

ISO-BUTANE                            800.00 PPM        8 HR TWA  ACGIH

PROPYLENE                           NONE ESTABLISHED
  (CONSIDERED A SIMPLE ASPHYXIANT BY ACGIH)


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3. HAZARDS IDENTIFICATION

*************************** EMERGENCY OVERVIEW ***************************


 BUTANE IS A COLORLESS GAS OR LIQUID WITH A SLIGHT HYDROCARBON ODOR.  IT IS
 SHIPPED AS A LIQUIFIED GAS UNDER PRESSURE.  BUTANE IS EXTREMELY FLAMMABLE
 AND EXPLOSIVE.  AT HIGH CONCENTRATIONS THIS PRODUCT IS A SIMPLE ASPHYXIANT,
 WHICH DISPLACES OXYGEN FROM THE BREATHING ATMOSPHERE.  LIQUID CONTACT WITH
 SKIN OR EYES WILL CAUSE FROSTBITE.  LARGE RELEASES CAN CREATE A FLAMMABLE
 VAPOR CLOUD.


 OSHA WARNING LABEL:

                                        DANGER!
                                  EXTREMELY FLAMMABLE
                             LIQUID AND GAS UNDER PRESSURE
                             LIQUID CAN CAUSE FROST BURNS

*******************************************************************************

POTENTIAL HEALTH EFFECTS

EYE:
 BUTANE VAPOR IS GENERALLY NON-IRRITATING TO EYES.  DIRECT CONTACT WITH
 LIQUIFIED PRODUCT CAN CAUSE "COLD BURN" OR FROSTBITE.

SKIN:
 BUTANE VAPOR IS GENERALLY NON-IRRITATING TO SKIN.  DIRECT CONTACT WITH
 LIQUIFIED PRODUCT CAN CAUSE "COLD BURN" OR FROSTBITE.

INHALATION:
 BUTANE IS AN ANESTHETIC AT HIGH CONCENTRATIONS, PRODUCING DIZZINESS,
 HEADACHE, INCOORDINATION AND NARCOSIS; EXTREMELY HIGH CONCENTRATIONS CAN
 CAUSE ASPHYXIATION AND DEATH BY DISPLACEMENT OF OXYGEN FROM THE BREATHING
 ATMOSPHERE.

INGESTION:
 INGESTION NOT LIKELY.

CARCINOGEN LISTING:
 NO DATA AVAILABLE.

MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE:
 INHALATION OF HIGH VAPOR CONCENTRATIONS OF BUTANE COMPONENTS IN ANIMALS HAS
 PRODUCED CARDIAC SENSITIZATION.  SUCH SENSITIZATION MAY CAUSE CHANGES IN
 HEART RHYTHMS.  THIS LATTER EFFECT WAS SHOWN TO BE ENHANCED BY OXYGEN
 DEFICIENCY OR THE INJECTION OF ADRENALIN-LIKE AGENTS.

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4. FIRST AID MEASURES

EYE:
 LIQUID:  FLUSH WITH LARGE AMOUNTS OF TEPID WATER FOR AT LEAST 15 MINUTES.
 IMMEDIATELY CALL A PHYSICIAN.

 GAS:  CALL A PHYSICIAN IF SYMPTOMS OR IRRITATION OCCUR.

SKIN:
 REMOVE CONTAMINATED CLOTHING.  THAW FROSTBITTEN AREAS SLOWLY WITH LUKEWARM
 WATER OR BY WRAPPING AFFECTED AREAS WITH BLANKETS.  DO NOT RUB AFFECTED
 AREAS.  LET CIRCULATION REESTABLISH ITSELF NATURALLY, EXERCISING AREA IF
 POSSIBLE.  CALL A PHYSICIAN.

INHALATION:
 IF AFFECTED, MOVE PERSON TO FRESH AIR.  IF BREATHING IS DIFFICULT,
 ADMINISTER OXYGEN.  IF NOT BREATHING OR IF NO HEARTBEAT, GIVE ARTIFICIAL
 RESPIRATION OR CARDIOPULMONARY RESUSCITATION (CPR).  IMMEDIATELY CALL A
 PHYSICIAN.

INGESTION:
 INGESTION NOT LIKELY.  IF SWALLOWED, IMMEDIATELY CALL A PHYSICIAN.

NOTES TO PHYSICIAN:
 NO DATA AVAILABLE.

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5. FIRE FIGHTING MEASURES

FLAMMABLE PROPERTIES:
   FLASH POINT:         -76 F
   AUTOIGNITION TEMP:   761 F
   EXPLOSIVE LIMITS (% BY VOLUME IN AIR)
       LOWER:           1.6
       UPPER:           8.4


FIRE AND EXPLOSION HAZARDS:
 THIS PRODUCT HAS BEEN DETERMINED TO BE A FLAMMABLE GAS/LIQUID AND SHOULD BE
 HANDLED ACCORDINGLY.  FOR ADDITIONAL FIRE RELATED INFORMATION SEE NFPA 30
 OR NORTH AMERICAN EMERGENCY RESPONSE GUIDE 115.

EXTINGUISHING MEDIA:
 CLASS B FIRE EXTINGUISHING MEDIA SUCH AS CO2 OR DRY CHEMICAL CAN BE USED
 FOR SMALL FIRES.  FIRE FIGHTING SHOULD BE ATTEMPTED ONLY BY THOSE WHO ARE
 ADEQUATELY TRAINED AND EQUIPPED WITH PROPER PROTECTIVE EQUIPMENT.  FOR
 LARGE FIRES, USE WATER SPRAY OR FOG.

SPECIAL FIRE FIGHTING INSTRUCTIONS:
 BLEVE'S (BOILING LIQUID EXPANDING VAPOR EXPLOSIONS) CAN OCCUR WHEN A LIQUID
 IN A PRESSURIZED CONTAINER IN CLOSE PROXIMITY TO A FIRE REACHES A
 TEMPERATURE WELL ABOVE ITS BOILING POINT.  ITS EFFECT COULD LEAD TO A
 CATASTROPHIC FAILURE OF THE VESSEL RESULTING IN FLYING EQUIPMENT FRAGMENTS,
 A SHOCK WAVE AND A FIREBALL CAUSING SERIOUS DAMAGE AND DEATH.  USE EXTREME
 CAUTION WHEN FIGHTING LIQUEFIED PETROLEUM GAS FIRES.

 ISOLATE HAZARD AREA.  IF SAFE TO DO SO, STOP THE FLOW OF GAS AND ALLOW FIRE
 TO BURN OUT.  EXTINGUISHING THE FLAME BEFORE SHUTTING OFF THE SUPPLY CAN
 CAUSE THE FORMATION OF EXPLOSIVE MIXTURES.  IN SOME CASES IT MAY BE
 PREFERRED TO ALLOW THE FLAME TO CONTINUE TO BURN.  KEEP SURROUNDING AREA
 COOL WITH WATER SPRAY FROM A DISTANCE AND PREVENT FURTHER IGNITION OF
 COMBUSTIBLE MATERIAL.  AVOID USE OF SOLID WATER STREAMS.  CONTACT WITH
 WATER AND LIQUIFIED PRODUCT CAN CAUSE INCREASED VAPORIZATION.

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6. ACCIDENTAL RELEASE MEASURES


 ISOLATE AND EVACUATE AREA.  SHUT OFF SOURCE IF SAFE TO DO SO.  LEAKING
 CONTAINERS SHOULD BE MOVED OUTDOORS OR TO WELL-VENTILATED AREA AND CONTENTS
 TRANSFERRED TO A SUITABLE CONTAINER.  BUTANE VAPOR IS HEAVIER THAN AIR AND
 CAN COLLECT IN LOW AREAS THAT ARE WITHOUT SUFFICIENT VENTILATION.  ADVISE
 AUTHORITIES AND NATIONAL RESPONSE CENTER (800-424-8802) IF SUBSTANCE HAS
 ENTERED A WATERCOURSE OR SEWER.

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7. HANDLING AND STORAGE


 BUTANE IS STORED AS A LIQUID BUT USED IN THE GASEOUS STATE.  COMPLY WITH
 ALL APPLICABLE OSHA, NFPA AND CONSISTENT LOCAL REQUIREMENTS.  USE
 APPROPRIATE GROUNDING AND BONDING PRACTICES.  STORE IN PROPERLY CLOSED
 CONTAINERS THAT ARE APPROPRIATELY LABELED AND IN A WELL-VENTILATED AREA.
 DO NOT EXPOSE TO HEAT, OPEN FLAME, STRONG OXIDIZERS OR OTHER SOURCES OF
 IGNITION.  AVOID OVERPRESSURIZING OR OVERFILLING CYLINDERS.  DO NOT CUT,
 DRILL, GRIND OR WELD ON EMPTY CONTAINERS SINCE THEY MAY CONTAIN EXPLOSIVE
 RESIDUES.  AVOID REPEATED AND PROLONGED SKIN CONTACT.  EXERCISE GOOD
 PERSONAL HYGIENE INCLUDING REMOVAL OF SOILED CLOTHING AND PROMPT WASHING
 WITH SOAP AND WATER.

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8. EXPOSURE CONTROL / PERSONAL PROTECTION

ENGINEERING CONTROLS:

 LOCAL OR GENERAL EXHAUST REQUIRED IN AN ENCLOSED AREA OR WITH INADEQUATE
 VENTILATION.


PERSONAL PROTECTIVE EQUIPMENT

RESPIRATORY PROTECTION:
 USE ATMOSPHERE SUPPLYING RESPIRATORS IN THE EVENT OF OXYGEN DEFICIENCY,
 WHEN MATERIAL PRODUCES VAPORS THAT EXCEED PERMISSIBLE LIMITS OR WHEN
 EXCESSIVE VAPORS ARE GENERATED.  OBSERVE RESPIRATOR PROTECTION FACTOR
 CRITERIA CITED IN ANSI Z88.2.  SELF-CONTAINED BREATHING APPARATUS SHOULD BE
 USED FOR FIRE FIGHTING.

SKIN PROTECTION:
 WEAR INSULATED GLOVES TO PREVENT SKIN CONTACT AND FROSTBITE.

EYE PROTECTION:
 GOGGLES OR FACESHIELD.

OTHER PROTECTIVE EQUIPMENT:
 WEAR IMPERVIOUS THERMAL CLOTHING TO PREVENT SKIN CONTACT AND FROSTBITE.

 USE MECHANICAL VENTILATION EQUIPMENT THAT IS EXPLOSION-PROOF.

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9. PHYSICAL AND CHEMICAL PROPERTIES


BOILING POINT:               31 F
MELTING POINT:               NO DATA AVAILABLE
SPECIFIC GRAVITY (H20=1):    0.6 @ 0 C
PACKING DENSITY (KG/M3):     NO DATA AVAILABLE
% SOLUBILITY IN WATER:       SOLUBLE
VAPOR DENSITY (AIR=1):       2.0 @ 0 C
VAPOR PRESSURE:              842 MMHG @ 70 F
                             16.3 PSI @ 70 F
PH INFORMATION:              NO DATA AVAILABLE
% VOLATILES BY VOL:          NO DATA AVAILABLE
EVAPORATION RATE:            NO DATA AVAILABLE
APPEARANCE:                  COLORLESS LIQUIFIED GAS
ODOR:                        SLIGHT HYDROCARBON
ODOR THRESHOLD (PPM):        NO DATA AVAILABLE

ADDITIONAL PROPERTIES:
 DENSITY:  4.86 POUNDS/GALLON @ 32 DEGREES F
 AVERAGE MOLECULAR WEIGHT:  58

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10. STABILITY AND REACTIVITY

STABILITY:
 THE MATERIAL IS STABLE AT 70 F, 760 MM PRESSURE.

CONDITIONS TO AVOID:
 SOURCES OF HEAT OR IGNITION.

HAZARDOUS DECOMPOSITION PRODUCTS:
 CARBON MONOXIDE.

INCOMPATIBLE MATERIALS:
 STRONG OXIDIZERS SUCH AS NITRATES, PERCHLORATES, CHLORINE, FLUORINE.

HAZARDOUS POLYMERIZATION:
 WILL NOT OCCUR.

CONDITIONS TO AVOID:
 NO DATA AVAILABLE.

ADDITIONAL COMMENTS:
 NO DATA AVAILABLE.

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11. TOXICOLOGICAL INFORMATION


 AT EXTREMELY HIGH CONCENTRATIONS AND EXCESSIVE EXPOSURE CONDITIONS BUTANE
 MAY PRODUCE CARDIAC SENSITIZATION.

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12. ECOLOGICAL INFORMATION


 THE AQUATIC TOXICITY LEVEL FOR MARINE ORGANISMS (TLM 96 HR) IS >1000 PPM.
 BUTANE IS NOT TOXIC TO AQUATIC LIFE OR WATERFOWL AND DOES NOT CONCENTRATE
 IN THE FOOD CHAIN.

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13. DISPOSAL CONSIDERATIONS


 THIS PRODUCT AS PRODUCED IS NOT SPECIFICALLY LISTED AS AN EPA RCRA
 HAZARDOUS WASTE ACCORDING TO FEDERAL REGULATIONS (40 CFR 261).  HOWEVER,
 WHEN DISCARDED OR DISPOSED OF, IT MAY MEET THE CRITERIA OF AN "IGNITABLE"
 HAZARDOUS WASTE.  THE MATERIAL COULD ALSO BECOME A HAZARDOUS WASTE IF MIXED
 OR CONTAMINATED WITH A LISTED HAZARDOUS WASTE.  IT IS THE RESPONSIBILITY OF
 THE USER TO DETERMINE IF DISPOSAL MATERIAL IS HAZARDOUS ACCORDING TO
 FEDERAL, STATE AND LOCAL REGULATIONS.

 BLEEDING OFF SMALL AMOUNTS INTO THE ATMOSPHERE OR CONTROLLED INCINERATION
 OF LARGE AMOUNTS ARE POTENTIAL DISPOSAL METHODS PROVIDED ALL REGULATORY
 REQUIREMENTS ARE MET.

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14. TRANSPORTATION INFORMATION


 49 CFR 172.101:

    PROPER SHIPPING NAME:       BUTANE
    DOT CLASSIFICATION:         2.1
    DOT IDENTIFICATION NUMBER:  UN 1011

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15. REGULATORY INFORMATION


 THE FOLLOWING REGULATIONS APPLY TO THIS PRODUCT:

 OSHA HAZARD COMMUNICATION STANDARD (29 CFR 1910.1200):

    THIS PRODUCT HAS BEEN EVALUATED AND DETERMINED TO BE HAZARDOUS AS
    DEFINED IN OSHA'S HAZARD COMMUNICATION STANDARD.

 EPA TOXIC SUBSTANCES CONTROL ACT (40 CFR PART 710):

    THIS PRODUCT AND/OR ITS COMPONENTS ARE LISTED ON THE TSCA CHEMICAL
    INVENTORY.

 EPA SARA TITLE III SUPERFUND AMENDMENTS AND REAUTHORIZATION ACT - EMERGENCY
 PLANNING & COMMUNITY RIGHT-TO-KNOW ACT OF 1986.

 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR PART 355):

    THIS PRODUCT CONTAINS THE FOLLOWING COMPONENT(S) IDENTIFIED ON APPENDIX
    A AND B OF THE EXTREMELY HAZARDOUS SUBSTANCE LIST (AT A LEVEL OF 1% OR
    GREATER IF HAZARDOUS; 0.1% OR GREATER IF CARCINOGENIC):  NONE.

 EMERGENCY RELEASE NOTIFICATIONS (40 CFR PART 355):

    THIS PRODUCT CONTAINS THE FOLLOWING COMPONENT(S) IDENTIFIED EITHER AS AN
    EXTREMELY HAZARDOUS SUBSTANCE (40 CFR 355) OR A CERCLA HAZARDOUS
    SUBSTANCE (40 CFR 302) WHICH IN CASE OF A SPILL OR RELEASE MAY BE
    SUBJECT TO EMERGENCY RELEASE REPORTING REQUIREMENTS:  NONE.

 MATERIAL SAFETY DATA SHEET REQUIREMENTS (40 CFR PART 370):

    THE FOLLOWING EPA HAZARD CATEGORIES APPLY TO THIS PRODUCT:

              IMMEDIATE (ACUTE) HEALTH HAZARD
              FIRE HAZARD
              SUDDEN RELEASE OF PRESSURE HAZARD

    MSDS'S OR A LIST OF MSDS'S AND THEIR HAZARDS (SEE EPA HAZARD CATEGORIES
    ABOVE) MAY BE REQUIRED TO BE SUBMITTED TO THE STATE EMERGENCY RESPONSE
    COMMISSION (SERC), LOCAL EMERGENCY PLANNING COMMITTEE (LEPC) AND LOCAL
    FIRE DEPARTMENT (LFD).

    IN ADDITION, A TIER II OR TIER I FORM MAY BE REQUIRED TO BE SUBMITTED
    ANNUALLY TO THE SERC, LEPC AND LFD IF APPLICABLE THRESHOLD REPORTING
    QUANTITIES ARE EXCEEDED.  CURRENT FEDERAL THRESHOLDS ARE:

         10,000 POUNDS OR MORE OF AN OSHA HAZARDOUS SUBSTANCE
                OR
            500 POUNDS OR THE THRESHOLD PLANNING QUANTITY, WHICHEVER IS
                LESS, OF AN EXTREMELY HAZARDOUS SUBSTANCE.

    NOTE:  THRESHOLDS MAY VARY ACCORDING TO LOCAL AND STATE REGULATIONS.

 TOXIC CHEMICAL RELEASE REPORTING (40 CFR PART 372):

    THIS PRODUCT CONTAINS THE FOLLOWING COMPONENT(S) (AT A LEVEL OF 1% OR
    GREATER IF HAZARDOUS; 0.1% OR GREATER IF CARCINOGENIC) THAT MAY BE
    SUBJECT TO REPORTING ON THE TOXIC RELEASE INVENTORY (TRI) FORM R):

    ---COMPONENT---                              ---CAS NUMBER---
    PROPYLENE                                        115-07-1

 STATE AND COMMUNITY RIGHT-TO-KNOW REGULATIONS:

    THIS MATERIAL MAY BE REGULATED BY LOUISIANA'S RIGHT-TO-KNOW LAW
    (REGULATORY STATUTE 30:2361).

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16. OTHER INFORMATION

NFPA CLASSIFICATION          HMIS CLASSIFICATION               HAZARD RATING

HEALTH:      1               HEALTH:              1            0 - LEAST
FIRE:        4               FIRE:                4            1 - SLIGHT
REACTIVITY:  0               REACTIVITY:          0            2 - MODERATE
OTHER:       -               PERSONAL PROTECTION: *            3 - HIGH
                                                               4 - EXTREME

COMMENTS:
 *  SEE SECTION 8 FOR GUIDANCE IN SELECTION OF PERSONAL PROTECTIVE
    EQUIPMENT.

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Updated: Friday, June 29, 2001