Product ID:ACETYLENE,ETHYNE,ETHINE
MSDS Date:06/01/1990
FSC:6830
NIIN:00-264-6751
MSDS Number: BVFKV

Emergency Phone: 215-481-4911 / 215-481-5900

Info Phone: 215-481-4911 / 215-481-5900

Cage: 00742

Telephone: 610-481-6333

Cage: 56028

ACETYLENE

CAS: 74-86-2

RTECS: AO9600000

ACGIH TLV: ASPHYXIANT; 9394

LD50 LC50 Mixture:LD50 (ORAL RAT) IS NOT RELEVANT.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:TARGET ORGANS:LUNGS AND CENTRAL
NERVOUS SYSTEM. ACUTE- SIMPLE ASPHYXIANT, IRRITANT AND ANESTHETIC.
ABOUT 100 MG/LITER MAY BE TOLERATED FOR 0.5-1 HOUR. IF OXYGEN IN
AIR IS DILUTED SUFFICIENTLY, CAN CAU SE HEADACHE, DIZZINESS,
SHORTNESS OF BREATH, LOSS OF CONCIOUSNESS. CHRONIC- NO EVIDENCE OF
HARMFUL EFFECTS.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:IRRITATION OF RESPIRATORY TRACT AND EYES,
HEADACHES, DIZZINESS, SHORTNESS OF BREATH, LOSS OF CONSCIOUSNESS
Medical Cond Aggravated by Exposure:INDIVIDUALS WITH A HISTORY OF
RESPIRATORY DISORDERS MAY BE AT INCREASED RISK FROM EXPOSURE.

First Aid:GET PROMPT MEDICAL ATTENTION. INHALED:REMOVE TO FRESH AIR.
PROVIDE OXYGEN/CPR IF NEEDED. TREAT SYMPTOMATICALLY AND
SUPPORTIVELY. FIRST DEGREE AND MINOR SECOND DEGREE THERMAL BURNS
FROM FIRE SHOULD BE IMMERSED IN COOL WATER FOR 30 MINUTES. MAJOR
SECOND AND THIRD DEGREE BURNS SHOULD BE COVERED IN THE CLEANEST
MATERIAL AVAILABLE.

Flash Point Method:CC
Flash Point:0F,-18C
Autoignition Temp:Autoignition Temp Text:581F
Lower Limits:2.5
Upper Limits:100
Extinguishing Media:DRY CHEMICAL, CARBON DIOXIDE OR HALON. COOL
CYLINDERS WITH WATER SPRAY.
Fire Fighting Procedures:ONLY SAFE WAY TO EXTINGUISH FIRE IS TO STOP
THE FLOW OF GAS. IF FLOW CANNOT BE STOPPED, LET FIRE BURN ITSELF
OUT WHILE COOLING WITH WATER FOG. STAY UPWIND.
Unusual Fire/Explosion Hazard:EXTREMELY FLAMMABLE AND EXPLOSIVE. IT MAY
DECOMPOSE VIOLENTLY IN ITS FREE STATE UNDER PRESSURE IN EXCESS OF
15 PSIG. IT BURNS WITH AN INTENSELY HOT FLAME.

Spill Release Procedures:WEAR PROTECTIVE EQUIPMENTS. VENTILATE AREA.
REMOVE SOURCES OF IGNITION, HEAT, SPARKS. STOP LEAK IF YOU CAN DO
IT WITHOUT RISK OR REMOVE CYLINDERS WITH SLOW LEAKS TO A REMOTE,
OUTDOOR LOCATION. AVOID E NTERING AREA OF FLAMMABLE ATMOSPHERE.
CALL VENDOR.
Neutralizing Agent:NOT RELEVANT

Handling and Storage Precautions:STORAGE OF 2500 CUBIC FEET OR LESS IS
PERMISSIBLE WITHIN BUILDING. STORAGE IN EXCESS OF 2500 CUBIC FEET
SHOULD BE OUTDOORS/IN WELL VENTILATED ROOMS.
Other Precautions:EXTREMELY FLAMMABLE. SECURE CYLINDER IN UPRIGHT
POSITION. STORE AWAY FROM INCOMPATIBLES AND HEAT. ACETYLENE STORED
IN CYLINDER IS DISSOLVED IN ACETONE. A FULL CYLINDER SHOULD NOT
EXCEED 250 PSIG AT 70 F. AVOID DRAGGING, ROLLING/SLIDING THEM.

Respiratory Protection:OXYGEN-DEFICIENT ATMOSPHERES ARE IN THE
FLAMMABLE RANGE. DO NOT ENTER. IT MAY IGNITE OR EXPLODE. AIR
PURIFYING RESPIRATOR WILL NOT FUNCTION.
Ventilation:MECHANICAL (GENERAL AND/OR LOCAL EXHAUST, EXPLOSION-PROOF)
VENTILATION TO MAINTAIN EXPOSURE BELOW PLV.
Protective Gloves:LEATHER OR WELDER'S GLOVES
Eye Protection:SAFETY GLASSES OR WELDER GOGGLES
Other Protective Equipment:LEATHER SLEEVES, LEATHER APRON AND OTHER
STANDARD PROTECTIVE EQUIPMENT FOR CUTTING AND WELDING
Work Hygienic Practices:OBSERVE GOOD PERSONAL HYGIENE PRACTICES AND
RECOMMENDED PROCEDURES.
Supplemental Safety and Health
USE ONLY IN WELL VENTILATED AREAS. HANDLE CYLINDERS WITH CARE. USE A
PRESSURE-REDUCING REGULATOR SET AT LESS THAN 15 PSIG. OPEN AND
CLOSE VALVES SLOWLY.

HCC:G2
NRC/State Lic Num:NOT RELEVENT
Boiling Pt:B.P. Text:-119F,-84C
Melt/Freeze Pt:M.P/F.P Text:-113F,-81C
Vapor Pres:30503-119F
Vapor Density:0.906
Spec Gravity:0.621 @ -116F
Evaporation Rate & Reference:NOT RELEVANT
Solubility in Water:1 FT3/1 FT3 @ 64F
Appearance and Odor:COLORLESS, FLAMMABLE GAS - ODORLESS WHEN PURE,
GARLIC-LIKE ODOR IF IMPURE

Stability Indicator/Materials to Avoid:NO
OXIDIZERS (OXYGEN & HALOGENS), COPPER, BRASS, COPPER SALT, MERCURY &
MERCURY SALT, SILVER & SILVER SALT, NITRIC ACID
Stability Condition to Avoid:NEVER UTILIZE FREE GAS OUTSIDE CYLINDER AT
PRESSURE IN EXCESS OF 15 PSIG. AVOID SHOCKS TO CYLINDER. AVOID
HEAT.
Hazardous Decomposition Products:ACETYLENE WILL DECOMPOSE INTO
ELEMENTAL CARBON AND HYDROGEN.

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF RESIDUAL GAS IN
CYLINDERS. RETURN CYLINDERS TO MANUFACTURER FOR DISPOSAL.

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.