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

Product ID:ACETYLENE
MSDS Date:11/29/1995
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:215-687-1052/800-424-9300(CHEMTREC)
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
Company Name:FIVER RANDOR CORP CTR
Box:UNKNOW
CAGE:NO747

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

Ingred Name:OTHER CONTAMINANTS:TRACES OF INGREDS #2-5
Fraction by Wt: TRACE
Other REC Limits:NONE RECOMMENDED

Ingred Name:ACETYLENE
CAS:74-86-2
RTECS #:AO9600000
Fraction by Wt: >99%
Other REC Limits:NONE RECOMMENDED
ACGIH TLV:ASPHYXIANT; 9596

Ingred Name:PHOSPHINE (SARA 302) (CERCLA)
CAS:7803-51-2
RTECS #:SY7525000
Fraction by Wt: TRACE
Other REC Limits:NONE RECOMMENDED
OSHA PEL:0.3 PPM
ACGIH TLV:0.3 PPM/1 STEL; 9596
EPA Rpt Qty:100 LBS
DOT Rpt Qty:100 LBS

Ingred Name:ARSINE (SARA 302/313) (CERCLA)
CAS:7784-42-1
RTECS #:CG6475000
Fraction by Wt: TRACE
Other REC Limits:NONE RECOMMENDED
OSHA PEL:0.05 PPM
ACGIH TLV:0.05 PPM, 9596

Ingred Name:HYDROGEN SULFIDE (SARA 302/313) (CERCLA)
CAS:7783-06-4
RTECS #:MX1225000
Fraction by Wt: TRACE
Other REC Limits:NONE RECOMMENDED
OSHA PEL:C, 20 PPM
ACGIH TLV:10 PPM/15 STEL; 9596
EPA Rpt Qty:100 LBS
DOT Rpt Qty:100 LBS

Ingred Name:AIR
RTECS #:AX5275000
Fraction by Wt: TRACE
Other REC Limits:NONE RECOMMENDED

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

Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:NARCOTIC GAS OR INTOXICANT CAUSES
    HYPERCAPNIA(EXCESS AMT OF CO2 IN BLOOD).REP EXPO TO TOLERABLE
    LEVELSHAS NOT SHOWN DELETERIOUS EFFECTS.MAJ PROPERTY IS EXCLUSION
    OF ADEQUATE SUPPLY OF OXY TO LUNGS.STI MULANTS SUCH AS EPINEPHRINE
    OR EPHEDRINE MAY INDUCE VENTRICULAR FIBRILLATION.
Explanation of Carcinogenicity:PER MSDS:CARCINOGEN STATUS:NONE.
Effects of Overexposure:INHAL:SIMPLE ASPHYXIANT/NARCOTIC.ACETYLENE
    LEVEL @2.5%-NONTOXIC;@10% SLIGHT INTOX W/REVER NARCOSIS;20% INTOX
    W/DYSPNEA,HEAD,STAGG GAIT;30% LOSS OF COORD;33-35%LOSS OF
    CONSC.>80% COMPLETE ANESTHESIA,IN CR BLOOD PRESS,NARC,STIM
    RESPIRATION.SKIN/EYE:NO ADVERSE EFFECTS REPORTED.INGEST:INGEST OF
    GAS NOT LIKELY.
Medical Cond Aggravated by Exposure:PERSONS IN ILL HEALTH WHERE SUCH
    ILLNESS WOULD BE AGGRAVATED BY EXPO TO ACETYLENE SHOULD NOT BE
    ALLOWED TO WORK W/ OR HANDLE THIS PRODUCT. TARGET EFFECTS:SIMPLE
    ASPHYXIANT;CNS DEPRESSANT.

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

First Aid:INHAL:REMOVE TO FRESH AIR IMMED.BREATH STOP GIVE ART
    RESP;AMIN OXY IF AVAI BY QUAL PERSON.TREAT SYMPT/SUPP.GET MED
    ATTN.SKIN:UNLIKELY THAT EMERG TREAT WILL BE REQUIRED.ADVERSE
    EFFECTS OCCUR WASH W/LG  AMTS OF H2O/SOAP.GET MED ATTN.EYE:UNLIKELY
    THAT EMERG TREAT WILL BE REQUIRED.ADVERSE EFFECTS OCCUR WASH W/H2O
    OR SALINE.GET MED ATTN.INGEST:UNLIKELY EMERG TREAT WILL BE
    REQUIRED.ADVERSE (OTHER PRECAU)

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

Flash Point:NP
Autoignition Temp:Autoignition Temp Text:581F
Lower Limits:2.5
Upper Limits:100
Extinguishing Media:DRY CHEM,CARBON DIOXIDE,HALON.FOR LG FIRES USE
    WATERSPRAY,FOG OR STANDARD FOAM.
Fire Fighting Procedures:MOVE CNTNR FRM FIRE AREA IF POSSIBLE.STAY AWAY
    FRM STORAGE TK ENDS.MASSIVE FIRE IN STORAGE AREA USE UNMAN HOSE
    HOLDER/MON NOZZ,ELSE W/D FRM AREA,LET FIRE (SUPP)
Unusual Fire/Explosion Hazard:DANGEROUS EXPLO HAZ WHEN EXPO TO
    HEAT/FLAME.DUE TO LOW ELECTROCONDUCTIVITY OF SUBST FLOW/AGITATION
    MAY GENERATE ELECTROSTATIC CHARGES RESULT IN SPARKS W/IGN.

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

Spill Release Procedures:SHUT OFF IGN SOURCES.STOP LEAK IF CAN W/O
    RISK.USE H2OSPRAY TO RED VAP.ISOLATE AREA TIL GAS HAS DISPERSED.NO
    SMOKING/FLAME/FLARES IN HAZ AREA.KEEP UNNECESSARY PEOPLE
    AWAY;ISOLATE HAZ AREA/DENY ENTRY.V ENTI CLSD SPACES BEF ENTERING.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:OBSERVE ALL FED/STATE/LOC REG WHEN
    STORING.ASSIST CALL EPA.STORE IAW 29CFR1910.102.PROTECT FRM OXI GAS
    ESPEC CHLORINE.STORE IN COOL WELL VENTI PLACE.
Other Precautions:STORE UPRIGHT IN NON COMBUST PLACE AWAY FRM ALL IGN
    SOURCES/COMBUST MATLS.PROTECT AGAINST LIGHTNING/STATIC ELECT.FOLLOW
    NFPA 77-1983 FOR STATIC ELECT.1STAID:EFFECTS OCCUR TREAT
    SYMPT/SUPP.GET MED ATTN .NO SPEC ANTIDOTE.TREAT SYMPT/SUPPORT.

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

Respiratory Protection:RESPIRATORS RECOMMENDED BASED ON PHYS
    DATA/TOX/HEALTH EFFECTS.SPEC RESP SELECTED MUST BE BASED ON CONTAM
    LEV IN WORKPLACE;NOT EXCEED WORK LIMIT OF RESP,NIOSH/MSHA APPROV.
Ventilation:PROVIDE LOC EXHAUST OR GEN DILUTION VENTI.VENTILATION EQPMT
    MUST BE EXPLOSION-PROOF.
Protective Gloves:NOT REQUIRED BUT RECOMMENDED
Eye Protection:SAF GLASS/GOGG ADVISABLE-PRESSURIZED
Other Protective Equipment:IMPERVIOUS CLOTHING NOT REQUIRED.
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
FIREFIGHT:BURN.W/D IMMED IF RISE SOUND FRM VENT SAF DEVICE/DISCOLOR OF
    STORAGE TK.LET STORAGE VESS BURN UNLESS LEAK CAN BE STOP;MS TK/CYL
    EXT/ISOLATE FRM OTHER FLAMM MATL.EXT ONLY IF FLOW CAN BE STOP; USE
    H2O IN FLOOD AMTS AS FOG.COOL CNTNRW/FLOOD AMT OF H2O.AVOID BREATH
    TOXIC VAP,KEEP UPWIND.UNCNTRL-EVACU RAD 1500FT.

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

HCC:G2
Boiling Pt:B.P. Text:NP
Melt/Freeze Pt:M.P/F.P Text:-119F,-84C
Decomp Temp:Decomp Text:NP
Vapor Pres:760 @-84C
Vapor Density:NP
Spec Gravity:0.610
pH:NP
Viscosity:NP
Evaporation Rate & Reference:NP
Solubility in Water:0.94 @25C
Appearance and Odor:COLORLESS GAS W/ETHEREAL ODOR WITH PURE,GARLIC-LIKE
    ODOR IF PURE.
Percent Volatiles by Volume:NP
Corrosion Rate:NP

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

BRASS W/>65%CU;BR2;CLACIUM HYPOCHLORITE;NITRIC
    ACID;MERCURY&SALTS;OXIDIZERS;OXY;OZONE;SILVER
    NITRATE;FL2;CL2;I2;AG&SALTS
Stability Condition to Avoid:HEAT/SPARK/FLAME/IGN SORUCE.UNDER
    PRESS-RUPT VIOL,TRAV DISTANCE.AVOID LINE/SYS PRESS >15PSIG,PREV
    FLAME PROPAGATION.
Hazardous Decomposition Products:MAY DECOMPO @ELEVATED
    TEMPS/PRESSURES.THERM DECOMPO PRODUCTS MAY INCLUDE TOXIC OXIDES OF
    CARBON.
Conditions to Avoid Polymerization:MAY POLYMERIZE EXOTHERMICALLY ON
    CONTACT W/APPROPRIATE CATALYSTS.

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

Waste Disposal Methods:OBSERVE ALL FED/STATE/LOC REG WHEN DISPOSING.

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