Product ID:ACETYLENE
MSDS Date:07/01/1994
FSC:6830
NIIN:00-292-0137
MSDS Number: BHDKB

Emergency Phone: 704-333-5475

Info Phone: 704-333-5475

Cage: 18264

Telephone: 804-627-5673

Cage: 0SSR7

ACETYLENE

CAS: 74-86-2

RTECS: AO9600000

ACGIH TLV: ASPHYXIANT; 9495

Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:ACUTE: ACETYLENE IS DEFINED AS A
SIMPLE ASPHYXIANT. OXYGEN LEVELS SHOULD BE MAINTAINED AT GREATER
THAN 18 MOLAR PERCENT AT NORMAL ATMOSPHERIC PRESSURE. CHRONIC:
REPEATED EXPSOURES HAVE NOT SHOWN DELET ERIOUS EFFECTS.
Explanation of Carcinogenicity:NOT CONSIDERED TO BE A CARCINOGEN BY
NTP, IARC, OR OSHA.
Effects of Overexposure:INHALATION:SYMPTOMS SIMILAR TO THAT OF BEING
INTOXICATED. AT HIGHER CONCENTRATIONS, MAY EXCLUDE AN ADEQUATE
SUPPLY OF OXYGEN TO THE LUNGS CAUSING UNCONSCIOUSNESS.
Medical Cond Aggravated by Exposure:PERSONS IN ILL HEALTH WHERE SUCH
ILLNESS WOULD BE AGGRAVATED BY EXPOSURE TO ACETYLENE SHOULD NOT BE
ALLOWED TO WORK WITH OR HANDLE THIS PRODUCT.

First Aid:PROMPT MEDICAL ATTENTION IS MANDANTORY IN ALL CASES OF
OVEREXPOSURE TO ACETYLENE. RESCUE PERSONNEL SHOULD BE EQUIPPED WITH
SELF-CONTAINED BREATHING APPARATUS AND BE COGNIZANT OF EXTREME FIRE
AND EXPLO SION HAZARD.

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 FROM
AREA SINCE HEATED CYLINDERS MAY RUPTURE VIOLENTLY.
Unusual Fire/Explosion Hazard:GASEOUS ACETYLENE IS SPONTANEOUSLY
COMBUSTIBLE IN AIR AT PRESSURES ABOVE 30 PSIA. IT REQUIRES A VERY
LOW IGNITION ENERGY SO THAT FIRES CAN REIGNITE VIOLENTLY.

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

Handling and Storage Precautions:USE ONLY IN WELL-VENTILATED AREAS. DO
NOT DRAG, SLIDE OR ROLL CYLINDERS. USE A HAND TRUCK TO MOVE
CYLINDERS.DO NOT USE HEAT TO INCREASE DISCHARGE RATE
Other Precautions:VALVE PROTECTION CAPS MUST REMAIN IN PLACE UNLESS
CONTAINER IS SECURED WITH VALVE OUTLET PIPED TO USE POINT. DO NOT
ALLOW THE FREE GAS TO EXCEED 30 PSIA (207 KPA). EARTH-GROUND AND
BOND ALL LINES AND EQUIPMENT ASSOCIATED WITH THE SYSTEM.

Respiratory Protection:POSITIVE PRESSURE AIR LINE OR SELF-CONTAINED
BREATHING APPARATUS SHOULD BE AVAILABLE FOR EMERGENCY USE.
Ventilation:HOOD WITH FORCED VENTILATION. MECHANICAL EXHAUST IN
ACCORDANCE WITH ELECTRICAL CODES.
Protective Gloves:PVC OR RUBBER
Eye Protection:SAFETY GOGGLES OR GLASSES.
Other Protective Equipment:SAFETY SHOES, SAFETY SHOWER.
Work Hygienic Practices:USE GOOD HYGIENE PRACTICES.
Supplemental Safety and Health
STORE IN A COOL, DRY, WELL-VENTILATED PLACE AWAY FROM INCOMPATIBLE
MATERIALS. SINCE ACETYLENE WILL EXPLODE OR COMBUST IF ITS PRESSURE
EXCEEDS 30 PSIA, IT IS SHIPPED DISSOLVED IN ACETONE OR DIMETHYLFOR
MAMIDE WHICH IS DISPERSED IN A POROUS MASS WITHIN THE CYLINDER.

HCC:G2
Boiling Pt:B.P. Text:-119F,-84C
Melt/Freeze Pt:M.P/F.P Text:-113F,-81C
Vapor Pres:33359
Vapor Density:1.107KG/M3
Spec Gravity:0.906
Evaporation Rate & Reference:N/A, DISSOLVED GAS
Solubility in Water:APPRECIABLE
Appearance and Odor:A COLORLESS GAS WITH A DISTINCTIVE GARLIC-LIKE
ODOR.

Stability Indicator/Materials to Avoid:NO
OXYGEN AND OTHER OXIDIZERS INCLUDING ALL OF THE HALOGENS AND HALOGEN
COMPOUNDS, COPPER, MERCURY, SILVER, BRASS.
Stability Condition to Avoid:HIGH TEMPERATURES, SPARKS, AND OPEN
FLAMES. DO NOT ALLOW THE FREE GAS TO EXCEED 30 PSIA. AVOID SUDDEN
SHOCK OR HEAT.
Hazardous Decomposition Products:CARBON AND HYDROGEN.
Conditions to Avoid Polymerization:DO NOT ALLOW FREE GAS TO EXCEED 30
PSIA. CYLINDERS SHOULD NOT BE EXPOSED TO SUDDEN SHOCK OR SOURCES OF
HEAT.

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 SECURED AND VALVE PROTECTION CAP IN
PLACE TO YOUR SUPPLI ER. FOR EMERGENCIES, CONTACT SUPPLIER.

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.