BKBCH - ACETYLENE

Product Identification

Product ID:ACETYLENE
MSDS Date:03/01/1986
FSC:6830
NIIN:00-270-8217
MSDS Number: BKBCH

Responsible Party
AIRCO, DIVISION OF THE BOC GROUP, INC.
575 MOUNTAIN AVENUE
MURRAY HILL, NJ 07974
US

Emergency Phone: 800-424-9300 CHEMTREC

Info Phone: 201-464-8100

Cage: IO644

Contractor
AIRCO, DIVISION OF THE BOC GROUP, INC.
MURRAY HILL, NJ 07974 US

Telephone: 201-464-8100

Cage: IO644

Ingredients

ACETYLENE

CAS: 74-86-2

RTECS: AO9600000

ACGIH TLV: ASPHYXIANT; 9192

Hazards

Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Health Hazards Acute and Chronic: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 CAUSE UNCONSICOUSNE SS. AS A NARCOTIC GAS OR INTOXICANT
CAUSES HYPERCAPNIA (AN EXCESSIVE AMOUNT OF CARBON DIOXIDE IN THE
BLOOD). REPEATED *
Effects of Overexposure:*EXPOSURES TO TOLERABLE LEVELS HAS NOT SHOWN
DELETERIOUS EFFECTS. THE MAJOR PROPERTY IS THE EXCLUSION OF AN
ADEQUATE SUPPLY OF OXYGEN TO THE LUNGS.
Medical Cond Aggravated by Exposure:ACETYLENE IS DEFINED AS A SIMPLE
ASPHYXIANT. OXYGEN LEVELS SHOULD BE MAINTAINED AT GREATER THAN 18
MOLAR PERCENT AT NORMAL ATMOSPHERIC PRESSURE WHICH IS EQUIVALENT TO
A PARTIAL PRESSURE OF 135 MM HG.

First Aid

First Aid:PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF
OVEREXPOSURE TO ACETYLENE. INHALE: CONSCIOUS PERSONS SHOULD BE
ASSISTED TO AN UNCONTAMINATED AREA AND INHALE FRESH AIR. QUICK
REMOVAL FROM THE CON TAMINATED AREA IS MOST IMPORTANT. UNCONSCIOUS
PERSONS SHOULD BE MOVED TO AN UNCONTAMINATED AREA, GIVEN ARTIFICIAL
RESPIRATION AND SUPPLEMENTAL OXYGEN. MEDICAL ATTENTION SHOULD BE
SOUGHT IMMEDIATELY.

Fire Fighting

Autoignition Temp:Autoignition Temp Text:565F
Lower Limits:2.2
Upper Limits:80-85*
Extinguishing Media:CO2, DRY CHEMICAL. *PURE ACETYLENE IGNITES BY
DECOMPN ABOVE 30 PSIA (207 KPA):UEL IS 100%IF SUFFT INTENSE IGNITE
SOURCE.
Fire Fighting Procedures:IF POSS, STOP FLOW OF ESCAPING GAS. USE WATER
SPRAY TO COOL SURROUNDING CONTAINERS. KEEP PERSONNEL AWAY SINCE
HEATED OR BURNING CYLINDERS CAN RUPTURE VIOLENTLY.
Unusual Fire/Explosion Hazard:SPONTANEOUSLY COMBUSTIBLE @ PRESSURES
ABOVE 30 PSIA. A VERY LOW IGNITION ENERGY NEEDED TO REIGNITE
EXTINGUISHED FIRES. ACETYLENE DOES NOT DISSIPATE READILY.

Accidental Release

Spill Release Procedures:EVACUATE ALL PERSONNEL FROM AFFECTED AREA. USE
APPROPRIATE PROTECTIVE EQUIPMENT. LEAK IN EQUIP: PURGE PIPING WITH
AN INERT GAS PRIOR TO REPAIR.IF LEAK IS IN CONTAINER/CONTAINER
VALVE, CONTACT THE CLOS EST AIRCO LOCATION OR CALL CHEMTREC:
800-424-9300.

Handling

Handling and Storage Precautions:PROTECT FROM PHYSICAL DAMAGE. STORE IN
COOL, DRY, WELL-VENTILATED AREA AWAY FROM HEAVILY TRAFFICKED AREAS
AND EMERGENCY EXITS. NO TEMP ABOVE 130F. *
Other Precautions:*CYLIN STORED UPRIGHT & FIRMLY SECURED TO PREVENT
FALLING/BEING KNOCKED OVER. FULL & EMPTY CYLIN TO BE SEGREGATED.
ROTATE STOCK. USE IN WELL-VENTILATED AREA. POST "NO SMOKING/OPEN
FLAMES" SIGN, VALVE PROTECT CAP TO REMAIN IN PLACE UNLESS **

Exposure Controls

Respiratory Protection:POSITIVE PRESSURE AIRLINE WITH MASK OR
SELF-CONTAINED BREATHING APPARATUS SHOULD BE AVAILABLE FOR
EMERGENCY USE.
Ventilation:HOOD W/FORCED VENTILN. PREVENT ACCUMULN ABOVE LEL. ELEC
EQUIP TO BE NON-SPARK/EXPLOSIVE PROOF. GROUND/BOND LINES, EQUIP.
Protective Gloves:LAB:PVC/RUBBER.WELDING/CUTTING:AS NEEDED
Eye Protection:SAFETY GOGGLES OR GLASSES.
Other Protective Equipment:SAFETY SHOES.
Work Hygienic Practices:NO SOURCES OF IGNITION IN STORAGE AREA. DO NOT
ALLOW FREE GAS TO EXCEED 30 PSIA. PROTECT FROM SUDDEN SHOCK & HEAT
SOURCE
Supplemental Safety and Health
**CNTNR IS SECURED W/VALVE OUTLET PIPED TO USE POINT. DO NOT
DRAG,SLIDE,ROLL CYLINDERS. USE PROPER HAND TRUCK FOR CYLIN
MOVEMENT. USE PRESSURE REDUCING REGULATOR FOR CONNECTING CYLIN TO
LOWER PRESSURE (3,000 PSIG) PIPING/SYSTEMS. DO NOT HEAT CYLIN TO
INCREASE DISCHARGE RATE. USE CHECK VALVE/TRAP IN DISCHARGE LINE.

Chemical Properties

HCC:G2
Boiling Pt:B.P. Text:-119F,-84C
Melt/Freeze Pt:M.P/F.P Text:-113F,-81C
Vapor Pres:645 PSIA
Spec Gravity:.0906
Solubility in Water:SOLUBLE
Appearance and Odor:PURE ACETYLENE:COLORLESS GAS W/ETHEREAL ODOR.
COMMERCIAL ACETYLENE:GARLIC ODOR.

Stability

Stability Indicator/Materials to Avoid:NO
** COMPOUNDS W/COPPER, MERCURY, SILVER, BRASSES CONTAINING +66% COPPER
& BRAZING MATERIALS CONTAINING SILVER OR COPPER.
Stability Condition to Avoid:OXYGEN & OTHER OXIDIZER INCLUDING ALL OF
THE HALOGENS AND HALOGEN COMPOUNDS. FORMS EXPLOSIVE ACETYLIDE
COMPOUNDS WITH**
Hazardous Decomposition Products:CARBON MONOXIDE AND HYDROGEN.

Disposal

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF RESIDUAL/UNUSED
QUANTITIES. RETURN IN THE SHIPPING CONTAINER PROPERLY LABELED, WITH
ANY VALVE OUTLET PLUGS OR CAPS SECURED AND VALVE PROTECTION CAP IN
PLACE TO AIRCO FOR P ROPER DISPOSAL. REFILLS BY QUALIFIED PRODUCER
ONLY

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.