U S AIRGAS INC. -- ACETYLENE  -- 6830-00-286-5434
<pre>=====================  Product Identification  =====================

Product ID:ACETYLENE
MSDS Date:05/01/1990
FSC:6830
NIIN:00-286-5434
=== Responsible Party ===
Company Name:U S AIRGAS INC.
Address:100 MATSONFORD ROAD SUITE 550
City:RADNOR
State:PA
ZIP:19087
Country:US
Info Phone Num:215-687-5253
Emergency Phone Num:215-687-1052
CAGE:0MN39
=== Contractor Identification ===
Company Name:AIRGAS INC
Address:100 MATSONFORD RD SUITE 550
Box:City:WAYNE
State:PA
ZIP:19087
Country:US
Phone:215-687-5253
CAGE:0MN39

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

Ingred Name:ACETYLENE
CAS:74-86-2
RTECS #:AO9600000
Fraction by Wt: 100%
ACGIH TLV:ASPHYXIANT; 9495

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

LD50 LC50 Mixture:PRODUCT'S LD50 (ORAL RAT) WAS NOT STATED
Routes of Entry: Inhalation:YES  Skin:NO  Ingestion:NO
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACETYLENE IS A SIMPLE ASPHYXIANT.
    MAINTAIN OXYGEN LEVELS OF >18 MOLAR PERCENT.
Explanation of Carcinogenicity:NOT LISTED BY IARC, NTP OR OSHA AS A
    CARDINOGEN OR POTENTIAL CARCINOGEN.
Effects of Overexposure:ACETYLENE IS A SIMPLE ASPHYXIANT. LOW
    CONCENTRATION MAY CAUSE INTOXICATION. HIGHER CONCENTRATION CAN
    CAUSE UNCONSCIOUSNESS. AS A NARCOTIC GAS OR INTOXICANT CAUSES
    HYPERCAPNIA (INCREASED CO2 IN BLOOD).
Medical Cond Aggravated by Exposure:PERSONS IN ILL HEALTH WHERE SUCH
    ILLNESS WOULD BE AGGRAVATED BY EXPOSURE TO ACETYLENE SHOULD NOT BE
    ALLOWED TO WORK WITH OR HANDLE THIS PRODUCT.

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

First Aid:PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF
    OVEREXPOSURE TO ACETYLENE.RESCUE PERSONNEL SHOULD BE EQUIPPED WITH
    SELF-CONTAINED BREATHING APPARATUS & BE AWARE OF EXTREME FIRE &
    EXPLOSION HAZAR D.REMOVE FROM EXPOSURE QUICKLY.PROVIDE CPR/OXYGEN
    IF UNCONSCIOUS.TREAT SYMPTOMATICALLY & SUPPORTIVELY.

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

Flash Point:FLAMMABLE GAS
Autoignition Temp:Autoignition Temp Text:565F
Lower Limits:2.2
Upper Limits:80 - 85
Extinguishing Media:USE CARBON DIOXIDE, DRY CHEMICAL. COOL FIRE-EXPOSED
    CONTAINERS WITH WATER SPRAY.
Fire Fighting Procedures:IF POSSIBLE, STOP FLOW OF GAS. USE WATER TO
    COOL SURROUNDING CONTAINERS. KEEP PERSONNEL AWAY SINCE HEATED OR
    BURNING CYLINDERS CAN RUPTURE VIOLENTLY.
Unusual Fire/Explosion Hazard:ACETYLENE IS SPONTANEOUSLY COMBUSTIBLE IN
    AIR AT PRESSURE >30PSIA. FIRES WHICH HAVE BEEN EXTINGUISHED W/O
    STOPPING FLOW OF GAS CAN EASILY REIGNITE & EXPLODE.

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

Spill Release Procedures:VENTILATE AREA. USE APPROPRIATE PROTECTIVE
    EQUIPMENT. REMOVE ALL SOURCES OF IGNITION. AVOID ENTERING AREA OF
    FLAMMABLE ATMOSPHERE. IF LEAK IS IN USER'S EQUIPMENT, PURGE PIPING
    WITH AN INERT GAS. IF LE AK IS IN CONTAINER/VALVE, CONTACT NEAREST
    SUPPLIER
Neutralizing Agent:MFR GAVE NO INFORMATION OF MSDS.

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

Handling and Storage Precautions:STORE IN COOL,DRY,WELL-VENTILATED
    AREA.KEEP CYLINDERS UPRIGHT & FIRMLY SECURED.
Other Precautions:USE "FIRST IN-FIRST OUT" INVENTORY SYSTEM. POST "NO
    SMOKING/OPEN FLAMES" SIGN IN THE STORAGE AREA. THERE SHOULD BE NO
    SOURCES OF IGNITION IN STORAGE/USE AREA. DO NOT ALLOW THE
    TEMPERATURE WHERE CYLIND ERS ARE STORED TO EXCEED 130F (54C).

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

Respiratory Protection:POSITIVE PRESSURE AIR LINE WITH MASK OR
    SELF-CONTAINED BREATHING APPARATUS SHOULD BE AVAILABLE FOR
    EMERGENCY USE.
Ventilation:LOCAL & MECHANICAL
Protective Gloves:PVC OR RUBBER
Eye Protection:SAFETY GLASSES/GOGGLES
Other Protective Equipment:SAFETY SHOES, EMERGENCY SHOWER
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
NONE

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

HCC:G2
NRC/State Lic Num:NONE
Boiling Pt:B.P. Text:-119F,-84C
Melt/Freeze Pt:M.P/F.P Text:-113F,-81C
Vapor Pres:645 PSIA
Evaporation Rate &amp; Reference:N/A.
Solubility in Water:SOLUBLE
Appearance and Odor:PURE ACETYLENE IS COLORLESS-ETHEREAL
    ODOR.COMMERCIAL ACETYLENE GARLIC-LIKE ODOR

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

Stability Indicator/Materials to Avoid:NO
OXYGEN & OTHER OXIDIZERS INCLUDING ALL HALOGENS & HALOGEN COMPOUNDS.
    FORMS EXPLOSIVE METAL ACETYLIDES
Stability Condition to Avoid:DO NOT ALLOW FREE GAS TP EXCEED 30 PSIA.
    DO NOT EXPOSE CYLINDERS TO SUDDEN SHOCK OR SOURCES OF HEAT.
Hazardous Decomposition Products:CARBON & HYDROGEN
Conditions to Avoid Polymerization:WILL NOT OCCUR.

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

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF WASTE OR UNUSED
    QUANTITIES. RETURN IN THE SHIPPING CONTAINER PROPERLY LABELED, WITH
    ANY VALVE OUTLET PLUGS OR CAPS SECURED & VALVE PROTECTION CAP IN
    PLACE TO YOUR SUPPLIER  OR CALL THE EMERGENCY TELEPHONE NUMBER.

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