Product ID:ACETYLENE,ETHYNE, ETHINE
MSDS Date:07/10/1986
FSC:6830
NIIN:00-442-5638
MSDS Number: BHDLV

Emergency Phone: 1-800-322-9092

Info Phone: 215-481-4911

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:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Explanation of Carcinogenicity:ACETYLENE IS A SIMPLE ASPHYXIANT AND HAS
NO TLV
Effects of Overexposure:HEADACHES,DIZZINESS,SHORTNESS OF BREATH, & LOSS
OF CONSCIOUSNESS MAY OCCUR IF THE GAS IS PRESENT IN QTY.
SUFFICIENT TO DILUTE OXYGEN IN AIR. ANOXIA OCCUR ONLYWHEN GAS
CONCENTRATIONS ARE WITHIN THE F LAMMABLE RANGE AND THE MIXTURE HAS
NOTIGNITED.

First Aid:FIRST/SECOND DEGREE THERMAL BURNS FROM FIRES SHOULD BE
IMMERSED IN COOL WATER FOR 30 MINS. MAJOR SECOND/THIRD DEGREE
BURNS SHOULD BE COVERED IN CLEANEST MATL AVAILABLE. PERSONS
SUFFERING FROM LACK O F OXYGEN SHOULD BE MOVED TO AREA WITHNORMAL
ATMOSPHERE. ASSISTED RESPIRATION/SUPPLEMENTAL OXYGEN SHOULD BE
GIVEN IF VICTIM IS NOT BREATHING. CONSULT A PHYSICIAN IMMEDIATELY.

Flash Point Method:CC
Flash Point:OF/-18C
Autoignition Temp:Autoignition Temp Text:**
Lower Limits:2.5
Upper Limits:100
Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL, HALON
Fire Fighting Procedures:USE WATER SPRAY TO KEEP CYLINDER/CONTAINERS
COOL IF EXPOSED TO FIRE.KEEP PERSON NEL AWAY SINCE CONTAINERS CAN
RUPTURE VIOLENTLY WHEN EXPOSED TO FIRE.
Unusual Fire/Explosion Hazard:POTENTIAL EXPLOSION HAZARD EXISTS FROM
REIGNITION IF FIRE IS EXTINGUISHED W/OUT SHUTTING OFF ACETYLENE
SOURCE.IGNITES VERY EASILY DUE TO LOW MINIMUM IGN ENERGY.

Spill Release Procedures:REMOVE SOURCES OF IGNITION,HEAT,SPARKS,ETC.
VENTI LATE AREA TO PREVENT FLAMMABLE MIXTURE FROM FORMING.
REMOVE CYLINDERS W/SLOW LEAKS TO A REMOTEOUTDOOR LOCATION. CONTACT
AIR PRODUCTS FOR ASSIST ANCE.

Handling and Storage Precautions:KEEP CYLINDERS AWAY FROM SOURCES OF
HEAT.STORE IN A NONHEAVY TRAFFIC AREA TO PREVENT DAMAGE. SEGRE-
GATE FULL/EMPTY CYLINDERS.
Other Precautions:KEEP CYLINDERS UPRIGHT/FIRMLY SECURED WHEN IN USE.
KEEP CYLINDERS AWAY FROM STORAGE OF OXYGEN/OTHER OXIDIZERS.
AVOID DRAGGING,ROLLING,SLIDING CYLINDERS. OPEN & CLOSE ACETYLENE
VALVES SLOWLY. US E A SUITABLE HANDTRUCK FOR MOVEMENT.

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 GLOVES/WELDERS GLOVES
Eye Protection:SAFETY GLASSES/WELDERS GOGGLES
Other Protective Equipment:LEATHER SLEEVES, LEATHER APRON AND OTHER
STANDARD PROTECTIVEEQUIPMENT FOR CUTTING/WELDING
Supplemental Safety and Health
NK

Boiling Pt:B.P. Text:*SEE BELOW
Vapor Pres:590 PSIA
Vapor Density:1ATM.0681
Spec Gravity:1 ATM 0.906
Solubility in Water:1ATM 1.0CUFT/CUFTH2O
Appearance and Odor:PURE:COLORLESS,ODORLESS. INPURITIES:CHARACTERISTIC
GARLIC LIKE ODOR.
Percent Volatiles by Volume:30PSI

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

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

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.