Product ID:ACETYLENE, ETHYNE, ETHINE
MSDS Date:07/10/1986
FSC:6830
NIIN:00-337-0389
MSDS Number: BHDLJ

Emergency Phone: 1-800-322-9092

Info Phone: 215-481-4911

Cage: 00742

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

Cage: 5H199

ACETYLENE

CAS: 74-86-2

Routes of Entry: Inhalation:YES Skin:YES Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:ACETYLENE IS A SIMPLE
ASPHYXIANT,IRRITANT, & ANESTHETIC. ABOUT 100 MG PER LITER MAY BE
TOLERATED FOR 0.5-1.0 HOUR. THERE IS NO EXPERIMENTAL EVIDENCE OF
CHRONIC HARMFUL EFFECTS.
Explanation of Carcinogenicity:ACETYLENE IS CLASSIFIED AS A SIMPLE
ASPHYXIANT & HAS NO TLV.
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 WHE N THE GAS CONCENTRATIONS ARE WITHIN
THEFLAMMABLE RANGE & THE MIXTURE HAS NOT IGNITED.

First Aid:FIRST/SECOND (MINOR) THERMAL BURNS FROM FIRES SHOULD BE
IMMERSED IN COOL WATER FOR 30 MINUTES. MAJOR SECOND/THIRD DEG
BURNS SHOULD BE COVERED IN THE CLEANEST MATERIAL AVAILABLE.
PERSONS SUFFERING FR OM LACK OF OXYGEN SHOULD BE MOVED TOFRESH AIR,
ASSISTED RESPIRATION & SUPPLEMENTAL OXYGEN SHOULD BE GIVEN IF THE
VICTIM IS NOT BREATHING. SEEK IMMEDIATE AID OF A PHYSICIAN.

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 CYLINDERS/CONTAINERS
COOL IF EXPOSED TO FIRE. KEEP PERSONNEL AWAY SINCE CONTAINERS CAN
RUPTURE VIOLENTLY WHEN EXPOSED TO FIRE.
Unusual Fire/Explosion Hazard:ACETYLENE IS EXTREMELY
FLAMMABLE/EXPLOSIVE & BURNS WITH AN INTENSELY HOT FLAME. CAN
REIGNITE IF FIRE IS EXTINGUISHED W/O SHUTTING OFF ACETYLENE SOURCE.

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

Handling and Storage Precautions:USE A SUITABLE HANDTRUCK FOR
MOVEMENT.STORAGE SHOULD NOT BE IN HEAVY TRAFFIC AREAS TO
PREVENT DAMAGE. KEEP CYLINDERS AWAY FROM SOURCES OF HEAT.
Other Precautions:SEGREGATE FULL/EMPTY CYLINDERS. AVOID
DRAGGING,ROLLING, OR SLIDING CYLINDERS. CYLINDERS SHOULD BE
UPRIGHT & SECURED WHEN IN USE. STORAGE OF 2500CU.FT. OR LESSIS
PERMISSIBLE W/IN BUILDING,IN EXCESS O F 2500CU.FT. MUST BE STORED
OUTDOORS.

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,OTHER STANDARD
PROTECTIVE EQUIPMENT.
Supplemental Safety and Health
NK

Boiling Pt:B.P. Text:*SEE BELOW
Vapor Pres:590 PSIA
Vapor Density:0.0681
Spec Gravity:1 ATM .906
Solubility in Water:1 ATM 1.0
Appearance and Odor:PURE: COLORLESS, ODORLESS IMPURITIES: GARLIC
LIKE ODOR.

Stability Indicator/Materials to Avoid:NO
OXIDIZER AS OXYGEN,HALOGENS.FORMS EXPLOSIVE COMPOUNDS WITH
COPPER,BRASS,COPPER SALT,HG/HG SALTS, K, AG/AG SALTS, & HNO3
Stability Condition to Avoid:AVOID MECH. SHOCKS TO CONTAINERS OF
ACETYLENE.NEVER UTILIZE FREE GAS OUTSIDE THE CYLINDER AT PRESS IN
EXCESS OF 15 PSIG.
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.