Product ID:ACETYLENE
MSDS Date:01/01/1991
FSC:6830
NIIN:00-290-4370
MSDS Number: BHDJG

Emergency Phone: 800-866-4422/800-424-9300 (CHEMTREC

Info Phone: 704-333-5475

Cage: 18264

Telephone: 704-333-5475

Cage: 18264

ACETYLENE

CAS: 74-86-2

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:AS A NARCOTIC GAS OR INTOXICANT CAUSES
HYPERCAPNIA (AN EXCESSIVE AMOUNT OF CARBON DIOXIDE IN THE BLOOD).
REPEATED EXPOSURES TO TOLERABLE LEVELS HAS NOT SHOWN DELETERIOUS
EFFECTS. THE MAJOR PROPERTY IS THE EXCLUSION OF AN ADEQUATE SUPPLY
OFOXYGEN TO THE LUNGS.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:INHALATION: LOW CONCENTRATIONS (10-20% IN AIR)
CAUSE SYMPTOMS SIMILAR TO THAT OFBEING INTOXICATED. HIGHER
CONCENTRATIONS SO AS TO EXCLUDE AN ADEQUATE SUPPLY OF OXYGEN TO THE
LUNGS CAUSE UNCONSCIOUSNES S.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:PROMPT MEDICAL ATTENTION IS MANDATORY. RESCUERS SHOULD BE
EQUIPPED WITH SELF- CONTAINED BREATHING APPARATUS & BE COGNIZANT OF
EXTREME FIRE & EXPLOSION HAZARD. CONSCIOUS PERSON SHOULD BE
ASSISTED TO UN CONTAMINATED AREA & TO FRESH AIR. UNCONSCIOUS PERSON
SHOULD BE MOVED TO UNCONTAMINATED AREA & GIVEN CPR AND SUPPLEMENTAL
OXYGEN. QUICK REMOVAL FROM THE CONTAMINATED AREA IS MOST IMPORTANT.

Flash Point:GAS
Autoignition Temp:Autoignition Temp Text:565F
Lower Limits:2.2
Upper Limits:80-85
Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL
Fire Fighting Procedures:IF POSSIBLE, STOP FLOW OF ESCAPING GAS. USE
WATER SPRAY TO COOL SURROUNDING CONTAINERS KEEP PERSONNEL AWAY
SINCE HEATED OR BURNING CYLINDERS CAN RUPTURE VIOLENT
Unusual Fire/Explosion Hazard:GASEOUS ACETYLENE IS SPONTANEOUSLY
COMBUSTIBLE IN AIR AT PRESSURES ABOVE 30 PSIA. IT REQUIRES LOW
IGNITION ENERGY SO FIRES EXTINGUISHED CAN EASILY REIGNITE.

Spill Release Procedures:EVACUATE PERSONNEL FROM AFFECTED AREA.USE
APPROPR.PROTECTIVE EQUIP. IF LEAK IS IN USERS EQUIPMENT, BE CERTAIN
TO PURGE PIPING WITH AN INERT GAS PRIOR TO ATTEMPTING REPAIRS. IF
LEAK IS IN CONTAINER OR CONTAINER VALVE,CONTACT YOUR CLOSEST
SUPPLIER.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:PROTECT CYLINDER FROM PHYSICAL DAMAGE.
STORE IN COOL, DRY, WELL-VENTILATED AREA. STORE SECURED & UPRIGHT
TO PREVENT FALLING OR BEING KNOCKED OVER.
Other Precautions:EARTH-GROUND & BOND ALL LINES & EQUIP ASSOC WITH THE
ACETYLENE SYSTEM. ELECTRICAL EQUIP. SHOULD BE NON-SPARKING OR
EXPLOSION PROOF. COMPRESSED GAS CYL. SHOULD NOT BE REFILLED EXCEPT
BY QUALIFIED PRODU CERS.

Respiratory Protection:POSITIVE PRESSURE AIR LINE WITH MASK OR SELF-
CONTAINED BREATHING APPARATUS SHOULD BE AVAILABLE FOR EMERGENCY
USE.
Ventilation:HOOD WITH FORCED VENTILATION.
Protective Gloves:PVC OR RUBBER
Eye Protection:SAFETY GOGGLES OR GLASSES
Other Protective Equipment:SAFETY SHOES, SAFETY SHOWER
Work Hygienic Practices:WASH HANDS AFTER EACH USE OF THIS PRODUCT
Supplemental Safety and Health
MOST METALS EXCEPT SILVER, COPPER, MERCURY OR BRASSES WITH MORE THAN
66% COPPER ARE COMPATIBLE (NON CORROSIVE) WITH ACETYLENE. ACETYLENE
HAS A DENSITY VERY SIMILAR TO THAT OF AIR SO WHEN LEAKING IT DO ES
NOT READILY DISSIPATE. FOLLOW SUPPLIER'S INSTRUCTIONS FOR MAXIMUM
WITHDRAWAL RATE FOR EACH SIZE CYLINDER.

HCC:G2
Boiling Pt:B.P. Text:-118F/-83C
Vapor Pres:645 @70F
Spec Gravity:68F/20C = 0.906
Solubility in Water:SOLUBLE
Appearance and Odor:PURE ACETYLENE IS COLORLESS GAS WITH ETHEREAL ODOR.
COMMER. HAS GARLIC-LIKE ODO
Percent Volatiles by Volume:GAS

Stability Indicator/Materials to Avoid:NO
OXYGEN AND OTHER OXIDIZERS INCLUDING ALL OF THE HALOGENS ANDHALOGEN
COMPOUNDS. EXPLOSIVE WITH COPPER, MERCURY, SLIVER.
Stability Condition to Avoid:DO NOT ALLOW THE FREE GAS TO EXCEED 30
PSIA. CYLINDER SHOULD NOT BE EXPOSED TO SUDDEN SHOCK OR SOURCES OF
HEAT.
Hazardous Decomposition Products:CARBON AND HYDROGEN

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF WASTE OR UNUSED
QUANTITIES. RETURN IN THE SHIPPING CONTAINER PROPERLY LABELED,WITH
ANY VALVE OUTLET PLUGS OR CAPS SECUREAND VALVE PROTECTION CAP IN
PLACE TO YOUR SUPPLIER. EMERGENCY DISPOSAL ASSISTANCE CALL
800-866-4422.

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.