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MSDS  : ACETYLENE
CAS  : 74-86-2
7784-42-1
7783-06-4
67-64-1
7803-51-2
NAME  : acetylene
arsine (sara iii)
hydrogen sulfide (sara iii)
acetone (sara iii)
phosphine (sara iii)
supp data:re-ignition could occur. if material leaking, but
explo haz:on other cyls. excess heat or fire exceeding 212f
ing 7:acetylene to escape, & if ignit occurs, a flame as
ing 8:if exposed to excessive direct heat impingement.
ing 9: enclosed spaces. there is thus, a potential
cndtns to avoid:in its cylinder. cylinders should not be
matls to avoid:as ignit sources. brasses cntng less than
ing 12:suitable for acetylene service under normal cndtns.
ing 13:other oxidizers including all of the halogens and
haz decomp prods:(i.e.:decompose into carbon and hydrogen)
efts of overexp:levels have not shown harmful efts. major
spill proc:supply location, or your local supplier.
other prec:sources of ignit.all elec equip should be explo
ing 18:elec codes for class 1 haz areas. earth-ground &
ing 19:should be non-sparking or explo proof. never use
ing 20:iron pipe should be used. do not open acetylene cyl
ing 21:excess of 15 psig pressure.acetylene cyls are
ing 22:filler matl & acetone. leak check w/soapy water;
ing 23:the cylinder owner is a violation of federal law (49
vent:acetylene. mechanical:explosion proof.
===================== Product Identification =====================

MSDS NAME:ACETYLENE
NIIN:01-024-4413
MSDS Number: BNDTS
=== Responsible Party ===
Company:GENERAL WELDING SUPPLY CO
Address:1122 WEST ROSECRANS AVE
City:GARDENA
State:CA
ZIP:90247
Country:US
Info Phone Num:213-329-7517
Emergency Phone Num:800-640-7517
CAGE:0NBF7
=== Contractor Identification ===
Company:GENERAL WELDING SUPPLY CO
Address:1122 W ROSECRANS AVE
Box:City:GARDENA
State:CA
ZIP:90247
Country:US
Phone:213-329-7517
CAGE:0NBF7

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

Name:ACETYLENE
CAS:74-86-2
RTECS #:AO9600000
Fraction by Wt: 99%
Other REC Limits:2500 PPM (NIOSH)
ACGIH TLV:SIMPLE ASPHYXIANT

Name:ARSINE (SARA III)
CAS:7784-42-1
RTECS #:CG6475000
Fraction by Wt: 3% PPM
OSHA PEL:0.05 PPM
ACGIH TLV:0.05 PPM

Name:HYDROGEN SULFIDE (SARA III)
CAS:7783-06-4
RTECS #:MX1225000
OSHA PEL:(C),20 PPM
ACGIH TLV:10 PPM/15 STEL; 9293
EPA Rpt Qty:100 LBS
DOT Rpt Qty:100 LBS

Name:ACETONE (SARA III)
CAS:67-64-1
RTECS #:AL3150000
OSHA PEL:1000PPM
ACGIH TLV:750PPM/1000STEL;9293
EPA Rpt Qty:5000 LBS
DOT Rpt Qty:5000 LBS

Name:PHOSPHINE (SARA III)
CAS:7803-51-2
RTECS #:SY7525000
Fraction by Wt: 95% PPM
OSHA PEL:0.3 PPM;1 STEL
ACGIH TLV:0.3 PPM;1 STEL
EPA Rpt Qty:100 LBS
DOT Rpt Qty:100 LBS

Name:SUPP DATA:RE-IGNITION COULD OCCUR. IF MATERIAL LEAKING, BUT
NOT ON FIRE, DOWN-WIND EVACUATION MUST BE CONSIDERED.
RTECS #:9999999ZZ

Name:EXPLO HAZ:ON OTHER CYLS. EXCESS HEAT OR FIRE EXCEEDING 212F
WILL CAUSE FUSIBLE SAFETY PLUGS TO RELS ALLOWING (ING 8)
RTECS #:9999999ZZ

Name:ING 7:ACETYLENE TO ESCAPE, & IF IGNIT OCCURS, A FLAME AS
LONG AS 15 FT COULD DEVELOP. CYLS MAY RUPTURE VIOLENTLY (ING 9)
RTECS #:9999999ZZ

Name:ING 8:IF EXPOSED TO EXCESSIVE DIRECT HEAT IMPINGEMENT.
ACETYLENE IS LIGHTER THAN AIR & CAN ACCUMULATE IN TOP OF (ING 10)
RTECS #:9999999ZZ

Name:ING 9: ENCLOSED SPACES. THERE IS THUS, A POTENTIAL
EXPLOSION HAZARD FROM RE-IGNITION.
RTECS #:9999999ZZ

Name:CNDTNS TO AVOID:IN ITS CYLINDER. CYLINDERS SHOULD NOT BE
EXPOSED TO SUDDEN SHOCK OR SOURCES OF HEAT.
RTECS #:9999999ZZ

Name:MATLS TO AVOID:AS IGNIT SOURCES. BRASSES CNTNG LESS THAN
65% COPPER IN THE ALLOY & CERTAIN NICKEL ALLOYS ARE (ING 13)
RTECS #:9999999ZZ

Name:ING 12:SUITABLE FOR ACETYLENE SERVICE UNDER NORMAL CNDTNS.
ACETYLENE CAN REACT EXPLO WHEN COMBINED W/OXYGEN & (ING 14)
RTECS #:9999999ZZ

Name:ING 13:OTHER OXIDIZERS INCLUDING ALL OF THE HALOGENS AND
HALOGEN COMPOUNDS.

Name:HAZ DECOMP PRODS:(I.E.:DECOMPOSE INTO CARBON AND HYDROGEN)
GIVEN A SOURCE OF IGNITION.
RTECS #:9999999ZZ

Name:EFTS OF OVEREXP:LEVELS HAVE NOT SHOWN HARMFUL EFTS. MAJOR
TOX PROPERTY IS DISPLACEMENT OF ADEQ SUPPLY OF O*2 TO LUNGS.
RTECS #:9999999ZZ

Name:SPILL PROC:SUPPLY LOCATION, OR YOUR LOCAL SUPPLIER.
RTECS #:9999999ZZ

Name:OTHER PREC:SOURCES OF IGNIT.ALL ELEC EQUIP SHOULD BE EXPLO
PROOF IN STOR/USE AREAS.STOR AREAS MUST MEET NATIONAL(ING 19)
RTECS #:9999999ZZ

Name:ING 18:ELEC CODES FOR CLASS 1 HAZ AREAS. EARTH-GROUND &
BOND ALL LINES & EQUIP ASSOC W/ACETYLENE SYS. ELEC EQUIP(ING 20)
RTECS #:9999999ZZ

Name:ING 19:SHOULD BE NON-SPARKING OR EXPLO PROOF. NEVER USE
COPPER PIPING FOR ACETYLENE SERVICE, ONLY STEEL/WROUGHT (ING 21)
RTECS #:9999999ZZ

Name:ING 20:IRON PIPE SHOULD BE USED. DO NOT OPEN ACETYLENE CYL
VALVES MORE THAN 1/2 TURN. NEVER USE ACETYLENE IN (ING 22)
RTECS #:9999999ZZ

Name:ING 21:EXCESS OF 15 PSIG PRESSURE.ACETYLENE CYLS ARE
HEAVIER THAN OTHER CYLS BECAUSE THEY ARE PACKED W/A POROUS(ING 23)
RTECS #:9999999ZZ

Name:ING 22:FILLER MATL & ACETONE. LEAK CHECK W/SOAPY WATER;
NEVER USE A FLAME. REFILLING CYLINDERS W/OUT CONSENT OF (ING 24)
RTECS #:9999999ZZ

Name:ING 23:THE CYLINDER OWNER IS A VIOLATION OF FEDERAL LAW (49
CFR).
RTECS #:9999999ZZ

Name:VENT:ACETYLENE. MECHANICAL:EXPLOSION PROOF.
RTECS #:9999999ZZ

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

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:DIZZINESS, HEADACHE, MILD GASTRIC
SYMPTOMS, & (IN HIGH CONCENTRATIONS) UNCONSCIOUSNESS, AND DEATH DUE
TO THE REDUCTION OF THE OXYGEN LEVEL IN AIR BELOW THAT REQUIRED TO
SUSTAIN LIFE. IN GENERAL INDUST RIAL PRACTICES, HOWEVER, ACETYLENE
DOESNOT CONSTITUTE A SERIOUS HEALTH HAZARD. IT SHOULD BE NOTED
THAT(EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:HLTH HAZ:BEFORE SUFFOCATION COULD OCCUR, THE
LOWER FLAMM LIMIT OF ACETYLENE IN AIR WOULD BE EXCEEDED; POSS
CAUSING BOTH AN O*2-DEFICIENT & AN EXPLO ATMOSPHERE. ACETYLENE IS
SIMPLE ASPHYXIANT & ANESTHE TIC. AS NARCOTIC GAS/INTOXICANT, IT
CAUSES HYPERCAPNIA (AN EXCESSIVE AMT OF CO IN BLOOD).RPTD EXPOS TO
TOLERABLE(ING 16)
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

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

First Aid:ELIMINATE ALL SOURCES OF IGNITION. INHAL:MOVE TO FRESH AIR.
IF NOT BREATHING, GIVE ARTIFICIAL RESPIRATION. IF BREATHING
DIFFICULT, GIVE O*2. OBTAIN MED ATTN. SKIN:FLUSH W/COPIOUS AMOUNTS
OF WATER. CAL L MD . EYE:FLUSH W/POTABLE WATER FOR MINIMUM OF 15
MINS. CALL MD . INGEST:CALL MD IMMED . RESCUE PERS MAY REQ
NIOSH/MSHA APPRVD SCBA & SHOULD BE COGNIZANT OF EXTREME FIRE/EXPLO
HAZ.

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

Flash Point Method:CC
Flash Point:0F,-18C
Lower Limits:2.5%
Upper Limits:80%
Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL, WATER.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPRVD SCBA & FULL PROT EQUIP
. SHUT OFF SOURCE OF ACETYLENE IF POSS. EXTING ONLY IF FLOW CAN BE
STOPPED. USE WATER IN FLOODING (SUPDAT)
Unusual Fire/Explosion Hazard:POSS INCR FIRE INTENSITY & EXPLO HAZ IF
CYLS ARE SO PILED OR STACKED THAT BURNING GAS ESCAPING FROM MELTED
FUSE PLUG (PRESS RELIEF DEVICE) IS DIRECTED (ING 7)

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

Spill Release Procedures:EVAC IMMED AREA. USE APPROP PROT EQUIP; ELIM
ANY POSS SOURCES OF IGNIT, & PROVIDE MAX EXPLO-PROOF VENT. SHUT OFF
SOURCE OF ACETYLENE, IF POSS. ISOLATE ANY LEAKING CYL. IF LEAKING
FROM CYL, VALVE, OR S AFETY PLUG CNTCT CLOSEST GEN WELDING (ING 17)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:STORE & USE W/ADEQ VENT. DO NOT STORE
W/IN 20 FEET OF O*2 OR ANY OTHER OXIDIZER. PROTECT CYLINDERS FROM
DAMAGE; DO NOT DRAG, ROLL, SLIDE OR DROP.
Other Precautions:CYLS SHOULD BE STORED UPRIGHT W/VALVE PROT CAP IN
PLACE & FIRMLY SECURED TO PVNT FALLING OR BEING KNOCKED OVER. USE
SUITABLE HAND TRUCK FOR CYL MOVEMENT. POST "NO SMOKING OR OPEN
FLAMES" SIGNS IN STOR /USE AREAS. THERE SHOULD BE NO (ING 18)

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

Respiratory Protection:USE NIOSH/MSHA APPROVED SCBA OR POSITIVE
PRESSURE AIR LINE WITH MASK IN OXYGEN-DEFICIENT ATMOSPHERES.
RESPIRATORS WILL NOT FUNCTION.
Ventilation:PROVIDE SYS ADEQ TO ENSURE ACETYLENE DOES NOT REACH ITS
LEL. LOC EXHST:SUFFICIENT TO KEEP AREA BELOW 2.5% (ING 25)
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:SAFETY SHOES WHEN HANDLING CYLINDERS.
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
BOILING PT:-103F, -75C @ 10PSIG. SOL IN H*2O:1.7SCC/100CC H*20@ 32F.
VAP PRESS:649.6 PSIA @ 70F. FIRE FIGHT PROC:AMTS AS HEAVY FOG TO
COOL ANY BURNING CYLS & SURROUNDING CNTNRS. KEEP UPWIND. EVAC TO R
ADIUS OF 1500 FEET FOR UNCONTROLLABLE FIRES. IF FLAME EXTINGUISHED
& ACETYLENE CONTINUES TO ESCAPE, AN EXPLO (ING 6)

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

Boiling Pt:B.P. Text:SUPP DATA
Vapor Pres:SUPP DATA
Spec Gravity:0.906 @ 32F
Evaporation Rate & Reference:NOT APPLICABLE (GAS)
Solubility in Water:SUPP DATA
Appearance and Odor:COLORLESS GAS WITH ETHEREAL OR GARLIC-LIKE ODOR
FROM IMPURITIES

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

Stability Indicator/Materials to Avoid:NO
UNDER CERTAIN CNDTNS, ACETYLENE CAN REACT W/COPPER, SILVER, & MERCURY
TO FORM ACETYLIDES, CMPDS WHICH CAN ACT (ING 12)
Stability Condition to Avoid:DO NOT USE ACETYLENE AT PRESSURES IN
EXCESS OF 15 PSIG (30 PSIA). IT IS STABLE BELOW 15 PSI OR IN
ACETONE SOLN (ING 11)
Hazardous Decomposition Products:ACETYLENE, UNDER PRESSURE CAN, EVEN IF
THE ABSENCE OF AIR OR OXYGEN, BE MADE TO EXPLODE VIOLENTLY (ING 15)

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

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE RESIDUAL OR UNUSED
CONTAINERS. RETURN TO YOUR SUPPLIER FOR DISPOSAL. DISPOSAL MUST BE
IN ACCORDANCE WITH ALL LOCAL, STATE, AND FEDERAL REGULATIONS .

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.

*** END OF RECORD ***
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