Product ID:ACETYLENE
MSDS Date:05/01/1985
FSC:6830
NIIN:00-264-6752
MSDS Number: BDQWR

Emergency Phone: 800-822-4357

Info Phone: 800-822-4357

Cage: 61637

Telephone: 818-341-2021

Cage: 3H796

ACETYLENE

CAS: 74-86-2

RTECS: AO9600000

Fraction By Weight: 100% %

ACGIH TLV: ASPHYXIANT; 9192

LD50 LC50 Mixture:NOT 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:ACETYLENE IS AN ASPHYXIANT. MODERATE
CONCENTRATIONS MAY CAUSE HEADACHE, DROWSINESS, DIZZINESS AND
UNCONSCIOUSNESS. LACK OF OXYGEN CAN CAUSE DEATH. SHORT TERM
OVEREXPOSURE TO FUMES MAY RESULT IN DISCOM FORT SUCH AS DIZZINESS,
NAUSEA OR DRYNESS/IRRITATION OF NOSE, THROAT OR EYES.
Explanation of Carcinogenicity:PRODUCT CONTAINS NO MATERIALS CURRENTLY
CLASSIFIED AS CARCINOGENIC BY NTP, IARC OR OSHA.
Effects of Overexposure:HEADACHE, DROWSINESS, DIZZINESS,
UNCONSCIOUSNESS, DEATH, NAUSEA, DRYNESS/IRRITATION OF NOSE, THROAT
OR EYES, DIFFICULTY BREATHING, WATERY EYES, FREQUENT COUGHING,
CHEST PAINS.
Medical Cond Aggravated by Exposure:PERSONS WITH PRE-EXISTING
RESPIRATORY CONDITIONS MAY BE SENSITIVE TO OVEREXPOSURE.

First Aid:CALL FOR MEDICAL AID. EMPLOY FIRST AID TECHNIQUES RECOMMENDED
BY THE AMERICAN RED CROSS. IF BREATHING IS DIFFICULT, GIVE OXYGEN.
CALL A PHYSICIAN. IF NOT BREATHING, BEGIN ARTIFICIAL RESIPRATION,
PREFE RABLY MOUTH-TO-MOUTH. IF NO DETECTABLE PULSE, BEGIN EXTERNAL
HEART MASSAGE. IMMEDIATELY CALL A PHYSICIAN. IN CASE OF EYE BURN,
CALL A PHYSICIAN.

Flash Point Method:TCC
Flash Point:0F,-18C
Autoignition Temp:Autoignition Temp Text:570F
Lower Limits:2.3
Upper Limits:100
Extinguishing Media:DO NOT PUT OUT FLAMES. ALLOW FIRE TO BURN OUT.
Fire Fighting Procedures:EVACUATE AREA. IMMEDIATELY COOL CONTAINERS
WITH WATER SPRAY. REMOVE IGNITION SOURCES. USE SCBA. STOP FLOW OF
GAS IF POSSIBLE.
Unusual Fire/Explosion Hazard:IF FLAMES ARE ACCIDENTLY EXTINGUISHED,
EXPLOSIVE RE-IGNITION MAY OCCUR. CONTAINER MAY RUPTURE DUE TO HEAT
OF FIRE. EXPLOSIVE LEVELS MAY LINGER.

Spill Release Procedures:ACETYLENE FORMS EXPLOSIVE MIXTURES WITH AIR.
IMMEDIATELY EVACUATE ALL PERSONNEL FROM DANGER AREA. USE
SELF-CONTAINED BREATHING APPARATUS WHERE NEEDED. REMOVE ALL SOURCES
OF IGNITION IF WITHOUT RISK. S HUT OFF LEAK IF WITHOUT RISK. SEE
SUP DATA.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:HEAT AND SPARKS DURING USE COULD BE
THE SOURCE OF IGNITION OF COMBUSTIBLE MATERIALS. PREVENT FIRES. USE
PIPNG/EQUIPMENT TO WITHSTAND PRESSURE.
Other Precautions:STORE AND USE WITH ADEQUATE VENTILATION. CLOSE VALVE
WHEN NOT IN USE AND WHEN EMPTY. NEVER WORK ON A PRESSURIZED SYSTEM.
TRAIN WORKER TO KEEP HIS HEAD OUT OT THE FUMES.

Respiratory Protection:USE RESPIRABLE FUME RESPIRATOR OR AIR SUPPLIED
RESPIRATOR WHEN WORKING IN CONFINED SPACES OR WHERE LOCAL EXHAUST
OR VENTILATION DOES NOT KEEP EXPOSURE BELOW TLV.
Ventilation:USE ENOUGH VENTILATION, LOCAL EXHAUST OR BOTH, TO KEEP THE
FUMES AND GASES BELOW TLV IN THE WORKER'S BREATHING ZONE.
Protective Gloves:WELDING GLOVES
Eye Protection:PROTECTIVE GOGGLES WITH FILTER LENS
Other Protective Equipment:AS NEEDED, WEAR HAND HEAD, AND BODY
PROTECTION WHICH HELP TO PREVENT INJURY FROM RADIATION.
Work Hygienic Practices:TRAIN THE WORKER NOT TO TOUCH LIVE ELECTRICAL
PARTS.
Supplemental Safety and Health
SPILL/RELEASE(CONT): RESUCE VAPORS WITH FOG OR FINE WATER SPRAY.
FLAMMABLE GAS MAY SPREAD FROM LEAK. BEFORE ENTERING AREA,
ESPECIALLY CONFINED AREAS, CHECK ATMOSPHERE WITH APPROPRIATE
DEVICE. FUMES A ND GASES CANNOT BE CLASSIFIED SIMPLY. THE
COMPOSITION AND QUANTITY OF BOTH ARE DEPENDENT UPON METAL WORKED &
PROCEDURES.

HCC:G2
Boiling Pt:B.P. Text:NONE
Melt/Freeze Pt:M.P/F.P Text:-119F,-84C
Vapor Pres:635 PSIG
Vapor Density:0.91
Spec Gravity:NONE
Solubility in Water:SLIGHT
Appearance and Odor:COLORLESS GAS AT NORMAL TEMPERTURE AND PRESSURE;
GARLIC-LIKE ODOR
Percent Volatiles by Volume:100 %

Stability Indicator/Materials to Avoid:NO
COPPER, SILVER, MERCURY OR THEIR ALLOYS, OXIDIZING AGENTS, ACIDS,
HALOGENS, MOSITURE.
Stability Condition to Avoid:STABEL AS SHIPPED. AVOID USE AT PRESSURES
ABOVE 15 PSIG.
Hazardous Decomposition Products:THERMAL DECOMPOSITION OR BURNING MAY
PRODUCE CARBON MONOXIDE, CARBON DIOXIDE, HYDROGEN GAS.
Conditions to Avoid Polymerization:MAY OCCUR. AVOID ELEVATED
TEMPERATURE, PRESSURE AND/OR THE PRESENCE OF A CATALYST.

Waste Disposal Methods:PREVENT WASTE FROM CONTAMINATING SURROUNDING
ENVIRONMENT. KEEP PERSONNEL AWAY. DISCARD ANY PRODUCT, RESIDUE,
DISPOSABLE CONTAINER OR LINER IN AN ENVIRONMENTALLY ACCEPTABLE
MANNER, IN FULL COMPLIANCE W ITH FEDERAL, STATE AND LOCAL
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.