Product ID:ACRTYLENE, ETHYNE ETHINE
MSDS Date:01/31/1978
FSC:6830
NIIN:00-270-8216
MSDS Number: BHDGD

Emergency Phone: 1-800-322-9092

Info Phone: 215-481-8257

Cage: 00742

Telephone: 800-345-3148/ 800-752-1597

Cage: 5H199

ACETYLENE, ETHYNE, ETHINE

CAS: 74-86-2

Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Effects of Overexposure:HEADACHES, DIZZINESS, SHORTNESS OF BREATH, &
LOSS OF CONSCIOUSNESS MAY OCCUR IF THE GAS IS PRESENT IN QUANTITIES
SUFFICIENT TO DILUTE THE OXYGEN CONCENTRATION IN AIR. SYMPTOMS OF
ANOXIA OCCUR ONLY WH EN THE GAS CONCENTRATION ARE WITHIN
THEFLAMMABLE RANGE AND THE MIXTURE HAS NOT IGNITED.

First Aid:FIRST DEGREE & MINOR SECOND DEGREE THERMAL BURNS SHOULD BE
IMMERSED IN COOL WTR FOR 30 MINUTES. MAJOR SECOND/THIRD DEGREE
BURNS SHOULD BE COVERED IN THE CLEANSTMATERIAL AVAILABLE. SEEK
IMMEDIATE MEDIC AL ATTENTION. PERSONS SUFFERING FROMLACK OF OXYGEN
SHOULD BE MOVED TO AREAS WITH NORMAL ATMOSPHERE. ASSISTED RESPIR
ATION AND SUPPLEMENTAL OXYGEN SHOULD BE GIVEN IF VICTIM IS NOT
BREATHING.

Flash Point Method:CC
Flash Point:OF / -18C
Autoignition Temp:Autoignition Temp Text:581F
Lower Limits:2.5
Upper Limits:100
Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL, HALON
Fire Fighting Procedures:STOP GAS FLOW & FIGHT FIRE CONVENTIONALLY. USE
WTR SPRAY TO KEEP CYLINDERS OR CONTNRS COOL IF EXPOSED TO FIRE.
KEEP PERSONNEL AWAY CONTNRS CAN RUPTURE IN HEAT
Unusual Fire/Explosion Hazard:POTENTIAL EXPLOSION HAZARD EXISTS FROM
REIGNITION IF FIRE IS EXTINGUISHED W/O SHUTTING OFF ACETYLENE
SOURCE. IGNITES VERY EASILY DUE TO LOW MINIM IGNITION.

Spill Release Procedures:REMOVE SOURCES OF IGNITION,HEAT,SPARKS,ETC.
AVOID ENTERING AREA OF FLAMMABLE ATMOSPHERE. VENTILATE AREA TO
PREVENT FLAMMABLE MIXTURE FROM FORMING. CAREFULLY REMOVE
CYLINDERS W/SLOW LEAKS TO A REMOTE OUTDOOR LOCATION.

Handling and Storage Precautions:USE ONLY IN WELL VENTILATED AREAS.
ALWAYS OPEN & CLOSE ACETYLENE VLVS SLOWLY. KEEP CYLINDERS AWAY
FROM SOURCE OF HEAT. SEGREGATE FULL/EMPTY CYLINDRS
Other Precautions:CYLINDERS SHOULD BE STORED IN A UPRIGHT POSITION.
CLOSE CYLINDER VALVE BEFORE SHUTTING OFF THE REGULATOR TO PERMIT
THE GAS TO BLEED FORM THE REGULATOR. AVOID HAZARDOUS MIXTURES AND
SOURCES OF IGNITI ON.

Respiratory Protection:OXYGEN DEFICIENT ATMOSPHERES ARE IN THE
FLAMMABLE RANGE. DO NOT ENTER. RESPIRATORS WILL NOT
FUNCTION.
Ventilation:NATURAL OR MECHANICAL WHERE GAS IS PRESENT.
Protective Gloves:LEATHER WORK GLOVES/WELDERS GLOVES
Eye Protection:SAFETY GLASSES/WELDER GOGGLES
Other Protective Equipment:LEATHER SLEEVES, LEATHER APRON AND OTHER
STANDARD PROTECTIVEEQUIPMENT FOR CUTTING OR WELDING.
Supplemental Safety and Health
NK

Boiling Pt:B.P. Text:-119.2F
Vapor Pres:62.2F
Vapor Density:68F
Spec Gravity:-116F
Appearance and Odor:PURE ACETYLENE IS COLORLESS,ODORLESS.GARLIC LIKE
ODOR IN CARBIDE GENRT ACETYLEN

Stability Indicator/Materials to Avoid:NO
OXIDIZERS SUCH AS OXYGEN & HALOGENS. FORMS EXPLOSIVE
COMPNDSW/COPPER,BRASS,COPPER SALT,HG/HG SALTS,K,AG/AG SALTS,& HNO3.
Stability Condition to Avoid:AVOID MECHANICAL SHOCKS TO CONTAINERS OF
ACETYLENE. NEVER EXPOSE CYLINDERS OR ACETYLENE SYSTEMS TO SOURCE
OF HEAT.
Hazardous Decomposition Products:ACETYLENE WILL DECOMPOSE INTO
ELEMENTAL CARBON & HYDROGEN UNDER THE ABOVE CONDITIONS IN
MATERIALS TO AVOID.

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF RESIDUAL GASEOUS
ACETYLENE IN CYLINDERS. RETURN TO AIR PRODUCTS FOR DISPOSAL.

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.