Product ID:ACETYLENE
MSDS Date:07/01/1994
FSC:6830
NIIN:00-264-6752
MSDS Number: BJFNR

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

Info Phone: 704-333-5475(X308)/FAX 344-1711

Cage: 18264

Telephone: 804-627-5673

Cage: 0SSR7

ACETYLENE

CAS: 74-86-2

RTECS: AO9600000

Fraction By Weight: >=98%

ACGIH TLV: ASPHYXIANT; 9596

LD50 LC50 Mixture:PRODUCT'S LD50 (ORAL RAT) WAS NOT STATED
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,
ACETYLENT 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 OF OXYGEN TO THE LUNGS.
Explanation of Carcinogenicity:ACETYLENE IS NOT LISTED AS A CARCINOGEN
OR POTENTIAL CARCINOGEN BY NTP, IARC, OR OSHA.
Effects of Overexposure:INHALATION:LOW CONCENTRATIONS (10-20% IN AIR)
CAUSE SYMPTOMS SIMILAR TO THAT OF BEING INTOXICATED. HIGHER
CONCENTRATIONS SO AS TO EXCLUDE AN ADEQUATE SUPPLY OF OXYGEN TO THE
LUNGS CAUSING UNCONSCIOUSN ESS.
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 >30 PSIA. IT HAS A VERY LOW IGNITION ENERGY,
FIRES CAN REIGNITE VIOLENTLY. DOES NOT DISSIPATE READILY.

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
IMMEDIATELY.
Neutralizing Agent:MFR GAVE NO INFORMATION ON MSDS.

Handling and Storage Precautions:PROTECT FROM PHYSICAL DAMAGE. STORE
UPRIGHT & SECURED IN COOL,DRY,WELL-VENTILATED AREA APPROPRIATE FOR
FLAMMABLE GASES. KEEP TEMPERATURE <125F/52C.
Other Precautions:DANGER! HANDLE ONLY PER COMPRESSED GAS ASSN.
PROCEDURES. SEE CGA PAMPHLETS G-1, P-1, P-14 & SAFETY BULLETIN
SB-2. GROUND & BOND ALL LINES & EQUIPMENT. DO NOT REFILL CYLINDERS.
DO NOT ROLL, SLIDE OR DR AG CYLINDERS, USE A CYLINDER TRUCK.

Respiratory Protection:POSITIVE PRESSURE AIR LINE OR SELF-CONTAINED
BREATHING APPARATUS SHOULD BE AVAILABLE FOR EMERGENCY USE.
Ventilation:HOOD W/FORCED VENTILATION. MECHANICAL EXHAUST I/A/W
ELECTRICAL CODES. LOCAL EXHAUST TO PREVENT ACCUMULATIONS >LEL.
Protective Gloves:PVC OR RUBBER
Eye Protection:SAFETY GOGGLES OR GLASSES.
Other Protective Equipment:SAFETY SHOES, SAFETY SHOWER.
Work Hygienic Practices:MFR:? HMIS:USE GOOD INDUSTRIAL HYGIENE
PRACTICES. MINIMIZE CONTACT & WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
SEGREGATE FULL & EMPTY CYLINDERS. ELIMINATE ALL IGNITION SOURCES FROM
STORAGE & USE AREAS. USE ONLY NON-SPARKING OR EXPLOSION PROOF
ELECTRICAL EQUIPMENT.

HCC:G2
NRC/State Lic Num:NONE
Boiling Pt:B.P. Text:-119F,-84C
Melt/Freeze Pt:M.P/F.P Text:-113F,-81C
Vapor Pres:4450 KPA
Vapor Density:1.107KG/M3
Spec Gravity:0.906
Evaporation Rate & Reference:N/A, DISSOLVED GAS
Solubility in Water:SOLUBLE
Appearance and Odor:A COLORLESS GAS W/AN ETHEREAL ODOR (COMMERCIAL
ACETYLENE HAS A GARLIC 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:WILL NOT OCCUR.

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.