AIRGAS INC -- ISOBUTYLENE-C4H8  -- 6665-01-448-3250
<pre>=====================  Product Identification  =====================

Product ID:ISOBUTYLENE-C4H8
MSDS Date:01/16/1998
FSC:6665
NIIN:01-448-3250
Status Code:A
MSDS Number: CLCVZ
=== Responsible Party ===
Company Name:AIRGAS INC
Address:259 RADNOR-CHESTER RD SUITE 100
City:RADNOR
State:PA
ZIP:19087-5240
Country:US
Info Phone Num:1-610-687-5253
Emergency Phone Num:(800)424-9300
Resp. Party Other MSDS Num.:DOCUMENT NUMBER: 1031
Preparer's Name:CHEMICAL SAFETY ASSOCIATE
Chemtrec Ind/Phone:(800)424-9300
CAGE:UO451
=== Contractor Identification ===
Company Name:AIRGAS INC
Address:259 RADNOR-CHESTER RD SUITE 100
Box:City:RADNOR
State:PA
ZIP:19087-5240
Country:US
Phone:1-610-687-5253
CAGE:UO451
Company Name:KAMPI COMPONENTS CO., INC.
Address:210 RT 13
Box:721
City:BRISTOL
State:PA
ZIP:19007-3517
Country:US
Phone:215-736-2000
CAGE:7Z016

=============  Composition/Information on Ingredients  =============

Ingred Name:ISOBUTYLENE
CAS:115-11-7
RTECS #:UD0890000
&gt; Wt:99.

Ingred Name:MAXIMUM IMPURITIES
&lt; Wt:1.

=====================  Hazards Identification  =====================

Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACUTE: THE MOST SIGNIFICANT HAZARD IS
    OXYGEN-DEFICIENT ATOMSPHERES. AT HIGH CONCENTRATIONS
    UNCONSCIOUSNESS OR DEATH MAY OCCUR. CONTACT WITH LIQUIDFIED GAS OR
    RAPIDLY EXPANDING GASES MAY CAUSE FROSTBIT E. ISOBUTYLENE ALSO HAS
    SOME DEGREE OF ANESTHETIC ACTION AND CAN BE MILDLY IRRITATING TO
    THE MUCOUS MEMBRANES. CHRONIC: NO KNOWN ADVERSE HEALTH EFFECTS
    ASSOCIATED WITH CHRONIC EXPOSURE TO ISOBUTYLENE.  TARGET ORGANS:
    RESPIRATORY SYSTEM.
Explanation of Carcinogenicity:ISOBUTYLENE IS NOT FOUND ON THE
    FOLLOWING LISTS: FEDERAL OSHA Z LIST, NTP, IARC, CAL/OSHA, AND
    THEREFORE IS NEITHER CONSIDERED TO BE NOR SUSPECTED TO BE A
    CANCER-CAUSING AGENT BY THESE AGENCIES.
Effects of Overexposure:INHALATION: SYMPTOMS OF OXYGEN DEFICIENCY
    INCLUDE RESPIRATORY DIFFICULTY, HEADACHES, RINGING IN EARS,
    DIZZINESS, DROWSINESS, UNCONSCIOUSNESS, NAUSEA, VOMITING, AND
    DEPRESSION OF ALL THE SENSES. UNDER  SOME CIRCUSTANCES OF
    OVEREXPOSURE, DEATH MAY OCCUR.

=======================  First Aid Measures  =======================

First Aid:RESCUERS SHOULD NOT ATTEMPT TO RETRIEVE VICTIMS OF EXPOSURE
    TO ISOBUTYLENE WITHOUT ADEQUATE PERSONAL PROTECTIVE EQUIPMENT. AT A
    MINIMUM, SELF-CONTAINED BREATHING APPARATUS AND FIRE-RETARDANT
    PERSONAL  PROTECTIVE EQUIPMENT SHOULD BE WORN. FIRE PROTECTION MUST
    BE PROVIDED DURING RESCUE SITUATIONS. REMOVE VICTIMS(S) TO FRESH
    AIR. TRAINED PERSONNEL SHOULD ADMINISTER OXYGEN AND/OR
    CARDIO-PULMONARY RESUS CITATION, IF NECESSARY. IN CASE OF
    FROSTBITE, PLACE FROSTBITEN PART IN WARM WATER. (CONTD. SEE OTHER
    INFORMATION)

=====================  Fire Fighting Measures  =====================

Flash Point Method:CC
Flash Point:<-10.C, 14.F
Autoignition Temp:=465.C, 869.F
Lower Limits:1.8
Upper Limits:9.6
Extinguishing Media:EXTINGUISH ISOBUTYLENE FIRES BY SHUTTING OFF THE
    SOURCE OF THE GAS. USE WATER SPRAY OR A FOAM AGENT TO COOL
    FIRE-EXPOSED CONTAINERS, STRUCTURES AND EQUIPMENT.
Fire Fighting Procedures:STRUCTURAL FIREFIGHTERS MUST WEAR
    SELF-CONTAINED BREATHING APPARATUS AND FULL PROTECTIVE EQUIPMENT.
    THE BEST FIRE-FIGHTING TECHNIQUE MAY BE SIMPLY TO LET THE BURNING
    GAS ESCAPE FROM THE PRESSURIZED CY LINDER, TANK CAR, OR PIPELINE.
    STOP THE LEAK BEFORE EXTINGUISHING FIRE. LEAKING GAS  COULD
    EXPLOSIVELY RE-IGNITE.
Unusual Fire/Explosion Hazard:WHEN INVOLVED IN A FIRE, THIS MATERIAL
    MAY IGNITE AND PRODUCE TOXIC GASES, INCLUDING CARBON MONOXIDE AND
    CARBON DIOXIDE.

==================  Accidental Release Measures  ==================

Spill Release Procedures:UNCONTROLLED RELEASES SHOULD BE COVERED BY
    TRAINED PERSONNEL USING PRE-PLANNED PROCEDURES. PROPER PROTECTIVE
    EQUIPMENT SHOULD BE USED. ADEQUATE FIRE PROTECTION MUST BE
    PROVIDED. MINIMUM PERSONAL PROTE CTIVE EQUIPMENT SHOULD BE LEVEL B:
    FIRE RETARDANT PROTECTIVE CLOTHING, GLOVES RESISTANT TO TEARS AND
    SELF CONTAINED BREATHING APPARATUS. USE NON-SPARKING TOOLS AND
    (CONTD. SEE "WASTE DISPOSAL")

======================	Handling and Storage  ======================

Handling and Storage Precautions:STORE IN COOL(,< 125F), DRY,
    WELL-VENTILATED AREA AWAY FROM SOURCES OF HEAT, IGNITION, DIRECT
    SUNLIGHT. COMPRESSED GASES PRESENT SAFETY HAZARD. STORE AWAY FROM
    OXIDIZERS, OXIGEN, CHLORINE, FLUORINE, H EAVILY TRAFFICKED AREAS,
    EMERGENCY EXITS. POST "NO SMOKING OR NO OPEN FLAMES " SIGNS.
Other Precautions:ELECTRICAL EQUIPMENT SHOULD BE NON-SPARKING. MOVE
    CYLINDERS WITH HAND TRUCK. DO NOT DRAG, ROLL, DROP, STRIKE EACH
    OTHER. SECURE FIRMLY. DO NOT HEAT CYLINDER OR USE OILS OR GREASE ON
    GAS-HANDLING FITTI NGS OR EQUIPMENT. USE DESIGNATED CGA FITTINGS.
    DO NOT USE ADAPTERS. USE CHECK VALVE OR TRAP IN DISCH ARGE LINE.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:MAINTAIN OXYGEN LEVELS ABOVE 19.5% IN THE
    WORKPLACE. USE SUPPLIED AIR RESPIRATORY PROTECTION IF OXYGEN LEVELS
    ARE BELOW 19.5% OR DURING EMERGENCY RESPONSE TO A RELEASE OF
    ISOUTYLENE. IF RESPIRATORY PR OTECTION IS REQUIRED, FOLLOW THE
    REQUIREMENTS OF THE FEDERAL OSHA RESPIRATORY STANDARD (29 CFR
    1910.134) OR EQUIVALENT STATE STANDARDS.
Ventilation:USE ADEQUATE VENTILATION. LOCAL EXHAUST VENTILATION IS
    PERFERRED, BECAUSE IT PREVENTS ISOBUTYLENE DISPERSION INTO THE
    WORKPLACE BY EMLIMINATING IT AT THE SOURCE
Protective Gloves:RESISTANT TO TEARS. USE LOW-TEMPERATURE PROTECTIVE
    GLOVED (E.G., KEVLAR)
Eye Protection:SPLASH GOGGLES OR SAFETY GLASSES.
Other Protective Equipment:USE BODY PROTECTION . TRANSFER OF LARGE
    QUANTITIES UNDER PRESSURE MAY REQUIRE PROTECTIVE EQUIPMET TO
    PROTECT FROM SPLASHES OF LIQUIDFIED PRODUCT AS WELL AS FIRE
    RETARANAT ITEMS.
Work Hygienic Practices:AS WITH ALL CHEMICALS, AVOID GETTING
    ISOBUTYLENE IN YOU. DO NOT EAT OR DIRNK WHILE HANDLING CHEMICALS.
    BEWARE OF ANY SIGNS OF DIZZINESS OR FATIGUE; EXPOSURES TO FATAL
    CONCENTRATIONS OF ISOBUTYLENE COULD
Supplemental Safety and Health
(CONTD. FROM FIRST AID)  DO NOT USE HOT WATER. IF WARM WATER  NOT
    AVAILABLE, OR IMPRACTICAL TO USE, WRAP  AFFECTED PARTS GENTLY IN
    BLANKETS. (SEE OTHER INFORMATION)

==================  Physical/Chemical Properties  ==================

HCC:G2
Boiling Pt:=-6.9C, 19.6F
Melt/Freeze Pt:=-140.C, -220.F
Vapor Pres:39 PSIA
Vapor Density:0.15LB/FT3
Spec Gravity:1.997
pH:NA
Solubility in Water:INSOLUBLE
Appearance and Odor:COLORLESS LIQUID/ GAS WITH THE UNPLEASANT ODOR OF
    BURNING COAL.

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZERS (E.G., CHLORINE, BROMINE PENTAFLUORIDE, OXYGEN, OXYGEN
    DIFLUORIDE, AND NITROGEN TRIFLUORIDE).
Stability Condition to Avoid:CONTACT WITH INCOMPATIBLE MATERIALS AND
    EXPOSURE TO HEAT, SPARKS, AND OTHER SOURCES OF IGNITION. CYLINDERS
    EXPOSED TO HIGH TEMPERATURES OR DIRECT FLAME CAN RUPTURE OR BURST.
Hazardous Decomposition Products:WHEN IGNITED IN THE PRESENCE OF
    OXYGEN, THIS GAS WILL BURN TO PRODUCE CARBON MONOXIDE AND CARBON
    DIOXIDE.
Conditions to Avoid Polymerization:WILL NOT OCCUR.

===================  Toxicological Information	===================

Toxicological Information:LC50 (RAT, INHALATION): 620 G/M3/ 4 HOURS;
    LC50 (MOUSE, INHALATION): 415 G/M3/ 2 HOUR. ISOBUTYLENE IS NOT
    FOUND ON FEDERAL OSHA Z LIST, NTP, IARC, CAL/OSHA, AND THEREFORE IS
    NEITHER CONSIDERED TO BE N OR SUSPECTED TO BE A CANCER-CAUSING
    AGENT BY THESE AGENCIES. PRODUCT MAY BE MILDLY IRRITATING TO THE
    MUCOUS MEMBRANES. IN ADDITION, CONTACT WITH RAPIDLY EXPANDING GASES
    CAN CAUSE FROSTBITE TO EXPOSED  TISSUE. ISOBUTYLENE IS NOT KNOWN TO
    CAUSE SENSITIZATION IN HUMANS. NO MUTAGENIC EFFECTS, NO EMBRYOTOXIC
    EFFECTS, NO TERATOGENIC EFFECTS, NO REPRODUCTIVE TOXICITY EFFECTS
    HAVE BEEN DESCRIBED FOR BUTYLE NE.

=====================  Ecological Information  =====================

Ecological:ENVIRONMENTAL STABILITY: THIS GAS WILL BE DISSIPATED RAPIDLY
    IN WELL-VENTILATED AREAS. EFFECTS OF MATERIAL ON PLANTS OR ANIMALS:
    ANY ADVERSE EFFECT ON ANIMALS WOULD BE RELATED TO OXYGEN-DEFICIENT
    ENVI RONMENTS. NO ADVERSE EFFECT IS ANTICIPATED TO OCCUR TO PLANT
    LIFE, EXCEPT FOR FROST PRODUCED IN THE PRESENCE OF RAPIDLY
    EXPANDING GASES. EFFECT OF CHEMICAL ON AQUATIC LIFE: NO EVIDENCE IS
    CURRENTLY AV AILABLE ON THE EFFECTS OF ISOBUTYLENE ON AQUATIC LIFE.

====================  Disposal Considerations  ====================

Waste Disposal Methods:WASTE DISPOSAL MUST BE IN ACCORDANCE WITH
    APPROPRIATE FEDERAL, STATE, AND LOCAL REGULATIONS. RETURN CYLINDERS
    WITH ANY RESIDUAL PRODUCT TO AIRGAS INC. DO NOT DISPOSE OF LOCALLY.
    (CONTD. FROM "SPILL RE LEASE") EQUIPMENT. IF NOT ABLE TO STOP
    RELEASE, ALLOW GAS TO RELEASE IN PLACE OR REMOVE TO A SAFE AR EA
    AND ALLOW GAS TO RELEASE.

===================  MSDS Transport Information  ===================

Transport Information:THIS MATERIAL IS HAZARDOUS AS DEFINED BY 49 CFR
    172.101 BY THE U.S. DEPARTMENT OF TRANSPORTATION. PROPER SHIPPING
    NAME: ISOBUTYLENE; CLASS: 2.1 (FLAMMABLE GAS); UN 1055; PKG: N/A;
    DOT LABELS REQUIRED:  FLAMMABLE GAS; NORTH AMERICAN EMERGENCY
    RESPONSE GUIDEBOOK NUMBER (1996): 115. ALTERNATE DESCRIPTION: PSN:
    PETROLEUM GASES, LIQUIDFIED; CLASS: 2.1 (FLAMMABLE GAS); UN 1075;
    PKG N/A; DOT LABEL REQUIRE D: FLAMMABLE GAS; NORTH AMERICAN
    EMERGENCY GUIDEBOOK NUMBER: 115; MARINE POLLUTANT: ISOBUTYLENE IS
    NOT CLASSIFIED BY THE DOT AS A MARINE POLLUTANT ( AS DEFINED BY 49
    CFR 172.101, APPENDIX B). CANADA:	SAME AS ABOVE.

=====================  Regulatory Information  =====================

SARA Title III Information:ISOBUTYLENE IS NOT SUBJECT TO THE REPORTING
    REQUIREMENTS OF SECTION 302, 304, AND 313 OF TITLE I I I OF THE
    SUPERFUND AMENDMENTS AND REAUTHORIZATION ACT. U.S. SARA THRESHOLD
    PLANNING QUANTITY: N/A. U. S. CERCLA REPORTABLE QUANTITY (RQ): NOT
    APPLICIABLE.
Federal Regulatory Information:ISOBUTYLENE IS LISTED ON THE U.S. TSCA
    INVENTORY. ISOBUTYLENE IS SUBJECT TO REPORTING REQUIREMENTS OF
    SECTION 112(R) OF THE CLEAN AIR ACT. THRESHOLD QUANTITY FOR THIS
    GAS IS 10,000 LB. DEPENDING ON SP ECIFIC OPERATIONS INVOLVING USE
    OF ISOBUTYLENE, REGULATIONS OF THE PROCESS SAFETY MANAGEMENT OF
    HIGHLY HAZARDOUS CHEMICALS MAY BE APPLICABLE (29 CFR 1910.119)
    UNDER THIS REGULATION ISOBUTYLENE IS NOT  LISTED IN APPENDIX A;
    HOWEVER, ANY PROCESS THAT INVOLVES A FLAMMABLE GAS ON-SITE, IN ONE
    LOCATION, I N QUANTITIES OF 10,000 LB (4,553 KG) OR GREATER IS
    COVERED UNDER THIS REGULATION UNLESS IT IS USED AS A FUEL.
State Regulatory Information:CALIFORNIA SAFE DRINKING WATER AND TOXIC
    ENFORCEMENT ACT (PROPOSITION 65): ISOBUTYLENE IS NOT ON THE
    CALIFORNIA PROPOSITION 65 LISTS. PRODUCT COVERED UNDER FOLLOWING
    STATE REGULATIONS: AK: DESIGNATED  TOXIC AND HAZARDOUS SUBSTANCES.
    CA: PERMISSIBLE EXPOSURE LIMITS FOR CHEMICAL CONTAMINANTS; FL:
    SUBSTANCE LIST; MA: SUBSTANCE LIST; MN: LIST OF HAZARDOUS
    SUBSTANCES; NJ: RIGHT TO KNOW HAZARDOUS SUBSTAN CE LIST; PA:
    HAZARDOUS SUBSTANCE LIST; RI: HAZARDOUS SUBSTANCE LIST; TX:
    HAZARDOUS SUBSTANCE LIST: W V: HAZARDOUS SUBSTANCE LIST; WI: TOXIC
    AND HAZARDOUS SUBSTANCES.

=======================  Other Information  =======================

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