Product ID:ACETYLENE, DISSOLVED
MSDS Date:03/01/1998
FSC:6830
NIIN:00N091570
Status Code:A
MSDS Number: CJMKP

Emergency Phone: 800-523-9374; 610-481-7711

Info Phone: 800-752-1597

Cage: 00742

Telephone: 800-345-3148/ 800-752-1597

Cage: 00742

ACETYLENE

CAS: 74-86-2

RTECS: AO9600000

LD50 LC50 Mixture:LD50:(ORAL) NONE REPORTED.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:ACUTE: INHALATION: ACETYLENE IS A
SIMPLE ASPHYXIANT. IT SHOULD BE NOTED THAT BEFORE SUFFOCATION COULD
OCCUR, THE LOWER FLAMMABILITY LIMIT OF ACETYLENE IN AIR WOULD BE
EXCEEDED; POSSIBLY CAUSING BOTH A N OXYGEN DEFICIENT AND AN
EXPLOSIVE ATMOSPHERE. EXPOSURE TO MODERATE CONCENTRATIONS MAY CAUSE
DIZZINESS, HEADACHE AND UNCONSCIOUSNESS. EYE/SKIN CONTACT: NONE.
CHRONIC: ACETYLENE IS A NON-TOXIC GAS THA T HAS NO CHRONIC HARMFUL
EFFECTS EVEN IN HIGH CONCENTRATIONS. ACETYLENE HAS BEEN USED AS AN
ANESTHETIC.
Explanation of Carcinogenicity:ACETYLENE IS NOT LISTED BY NTP, OSHA OR
IARC.
Effects of Overexposure:SEE HEALTH HAZARDS.
Medical Cond Aggravated by Exposure:NONE.

First Aid:INHALATION: REMOVE PERSON TO FRESH AIR. IF NOT BREATHING,
ADMINISTER ARTIFICIAL RESPIRATION. IF BREATHING IS DIFFICULT,
ADMINISTER OXYGEN. OBTAIN PROMPT MEDICAL ATTENTION. EYES: NOT
APPLICABLE. IMMEDI ATELY FLUSH W/POTABLE WATER FOR AT LEAST 15
MINUTES, SEEK ASSISTANCE FROM MD . SKIN: NOT APPLICABLE. FLUSH
W/COPIOUS AMOUNTS OF WATER. CALL MD . INGESTION: NOT APPLICABLE.
CALL MD IMMEDIAT ELY . NOTES TO MD: NONE.

Autoignition Temp:=305.C, 581.F
Lower Limits:2.5%
Upper Limits:81%
Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL, WATER.
Fire Fighting Procedures:USE NIOSH APPRVD SCBA & FULL PROTECTIVE EQUIP
. SHUT OFF SOURCE OF ACETYLENE IF POSS. EXTING FIRE ONLY IF FLOW
CAN BE STOPPED. KEEP ADJACENT CYLS COOL BY SPRAYING LG AMTS OF
WATER UNTIL FIRE BUR NS ITSELF OUT & CYLS ARE COOL. IF FLAME IS
EXTINGUISHED & ACETYLENE CONTINUES TO ESCAPE, EXPLO RE-IGNITION
COULD OCCUR.
Unusual Fire/Explosion Hazard:NFPA RATINGS:HLTH - 0; FLAMMABILITY - 4;
REACTIVITY - 3. HMIS RATINGS:HLTH - 1; FLAMMABILITY - 4; REACTIVITY
- 3. EXCESSIVE HEAT/FIRE WILL CAUSE FUSIBLE METAL PRESS RELIEF
DEVICE TO MELT ALLOWING ACET YLENE TO ESCAPE. CYLS MAY RUPTURE
VIOLENTLY IF SIDEWALLS ARE EXPOS TO DIRECT FLAME IMPINGEMENT.
ACETYLENE IS (SUPP DATA)

Spill Release Procedures:EVACUATE IMMEDIATE AREA. ELIMINATE ANY
POSSIBLE SOURCES OF IGNITION, AND PROVIDE MAXIMUM EXPLOSION-PROOF
VENTILATION. SHUT OFF SOURCE OF ACETYLENE, IF POSSIBLE. ISOLATE ANY
LEAKING CYLINDER. IF LEAKIN G FROM CYLINDER, VALVE, OR FUSIBLE
METAL PRESSURE RELIEF DEVICE, CONTACT YOUR SUPPLIER.

Handling and Storage Precautions:STORE & USE W/ADEQ VENT. CYLS SHOULD
BE SEPARATED FROM OXYG & OTHER OXIDIZERS BY MIN DIST OF 20 FT/BY
BARRICADE OF NON-COMBUST MATL AT LST 5 FT HIGH HAVING FIRE
RESISTANCE RATING OF AT LST 1/2 HR. STO R >2,500 CU FT IS
PROHIBITED IN BLDGS W/OTHER OCCUPANCIES. THERE SHOULD BE NO SOURCES
OF IGNITION.
Other Precautions:CYLS SHOULD E STORED UPRIGHT W/VALVE PROT CAP IN
PLACE & FIRMLY SECURED TO PVNT FALLING/BEING KNOCKED OVER. POST "NO
SMOKING/OPEN FLAMES" SIGNS IN STOR/USE AREAS. ALL ELEC EQUIP SHOULD
BE EXPLO-PROOF IN STOR AREAS. STOR AREAS MUST MEET NEC FOR CLASS 1
HAZ AREAS. DO NOT ALLOW STOR TEMP TO EXCEED 125F (52C). (TOX INFO)

Respiratory Protection:EMERGENCY USE: NIOSH APPROVED AIR SUPPLIED
RESPIRATORS ARE REQUIRED IN OXYGEN-DEFICIENT ATMOSPHERES (AIR
PURIFYING RESPIRATORS WILL NOT FUNCTION). BEFORE ENTERING AREA YOU
MUST CHECK FOR FLAMMABLE OR OXYGEN DEFICIENT ATMOSPHERES.
Ventilation:PROVIDE ADEQUATE NATURAL OR EXPLOSION-PROOF VENTILATION TO
ENSURE ACETYLENE DOES NOT REACH ITS LOWER FLAMMABLE LIMIT OF 2.5%.
Protective Gloves:WORK GLOVES.
Eye Protection:ANSI APPROVED CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:SAFETY SHOES RECOMMENDED WHEN HANDLING
CONTAINERS.
Supplemental Safety and Health
EXPLO HAZ:FLAMM, COLORLESS, DISSOLVED GAS PACKAGED IN CYLS UNDER PRESS.
IT POSES IMMED FIRE & EXPLO HAZ WHEN CONCS EXCEED 2.5%. IT WILL
DECOMPOSE VIOLENTLY IN ITS FREE STATE UNDER PRESS IN EXCESS OF 1 5
PSIG. HIGH CONCS THAT WILL CAUSE SUFFOCATION ARE W/IN FLAMM RANGE &
MUST NOT BE ENTERED. HAZ COMBUST (OTHER INFO)

Boiling Pt:=-75.2C, -103.4F
B.P. Text:10 PSIG
Melt/Freeze Pt:=-82.2C, -116.F
M.P/F.P Text:10 PSIG
Vapor Pres:635 PSIG @ 70F(21.1C)
Vapor Density:OTHER INFO
Spec Gravity:OTHER INFO
Evaporation Rate & Reference:N/A(GAS)(BUTYL ACETATE=1)
Solubility in Water:1.7(V/V @ 32F(OC)& 1 ATM)
Appearance and Odor:COLORLESS GAS. ACETYLENE OF 100% PURITY IS ODORLESS
BUT COMMERCIAL (OTHER INFO)

Stability Indicator/Materials to Avoid:NO
UNDER CERTAIN CNDTNS, ACETYLENE CAN REACT W/COPPER, SILVER & MERCURY TO
FORM ACETYLIDES, CMPDS WHICH CAN ACT AS IGNIT SOURCES. BRASSES
CNTNG <65% COPPER IN ALLOY & CERTAIN NICKEL ALLOYS ARE SUITABLE FOR
ACETYLENE SERVICE UN
Stability Condition to Avoid:UNSTABLE. STABLE AS SHIPPED. DO NOT USE AT
PRESSURE >15 PSIG. CYLINDERS SHOULD NOT BE EXPOSED TO SUDDEN SHOCK
OR SOURCES OF HEAT.
Hazardous Decomposition Products:HYDROGEN, CARBON.
Conditions to Avoid Polymerization:WILL NOT OCCUR.

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF RESIDUAL OR UNUSED
QUANTITIES. RETURN CYLINDER TO SUPPLIER. UNSERVICEABLE CYLINDERS
SHOULD BE RETURNED TO THE SUPPLIER FOR SAFE AND PROPER DISPOSAL.

Toxicological Information:LC50 (INHAL):ACETYLENE IS A SIMPLE ASPHY.
LD50(DERMAL:NONE REPORTED. SKIN CORROSIVITY: ACETYLENE IS NOT CORR.
ADDNL NOTES TO MD:NONE. -- OTHER PREC: FULL & EMPTY CYLS SHOULD BE
SEGREGATED. USE FIRST-I N, FIRST-OUT INVENTORY SYS TO PVNT FULL
CNTNRS FROM BEING STORED FOR LONG PERIODS OF TIME. PROT CYLS FROM
PHYSICAL DMG; DO NOT DRAG, ROLL, SLIDE/DROP. USE SUITABLE HAND
TRUCK FOR CYL MOVEMENT. ALL ACE TYLENE PIPED SYS & ASSOC EQUIP MUST
BE GROUNDED. ELEC EQUIP SHOULD BE NON-SPARKING/EXPLO-PROOF. NEVER
USE COPPER PIPING FOR ACETYLENE SERVICE, ONLY STEEL/WROUGHT IRON
PIPE SHOULD BE USED. ACETYLENE CY L VALVE SHOULD BE (ECOLOGICAL
INFO)

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.

Ecological:NO ADVERSE ECOLOGICAL EFTS ARE EXPECTED. ACETYLENE DOES NOT
CONTAIN ANY CLASS 1/CLASS II OZONE DEPLETING CHEMS (40 CFR PART
82). ACETYLENE IS NOT LISTED AS A MARINE POLLUTANT BY DOT(49 CFR
PART 171). -- TOX INFO: OPENED MIN AMT REQD TO DELIVER ACCEPT FLOW
SO THAT IT CAN BE CLSD AS QUICKLY AS POSS IN EMER SITUATION. DO NOT
OPEN ACETYLENE CYL VALVES >1-1/2 TURNS. NEVER USE ACETYLENE IN
EXCESS OF 15 PSIG PRESS. ACETYLENE CYLS ARE HVR THAN OTHER CYLS
BECAUSE THEY ARE PACKED W/POROUS FILLER MATL & ACETONE. LEAK CHECK
W/SOAPY WATER; NEVER USE FLAME. NEVER INSERT OBJECT (E.G., WRENCH,
SCREWDRIVER, PR Y BAR, ETC) INTO (STATE REGULATORY INFO)

Transport Information:DOT SHIPPING NAME: ACETYLENE, DISSOLVED. HAZARD
CLASS: 2.1 (FLAMMABLE GAS). ID NUMBER: UN 1001. SHIPPING LABEL(S):
FLAMMABLE GAS. PLACARD (WHEN REQUIRED): FLAMMABLE GAS. TRANSPORT
SECURED UPRIGHT IN W ELL VENTILATED TRUCK. NEVER TRANSPORT IN
PASSENGER COMPARTMENT OR TRUNK OF VEHICLE. SHIPMENT OF COMPRESSED
GAS CYLINDERS WHICH HAVE NOT BEEN FILLED WITH OWNERS CONSENT IS A
VIOLATION OF FEDERAL LAW (4 9 CFR PART 173.301(B)).

SARA Title III Information:EPA: CERCLA: (40 CFR PARTS 117 & 302) - RQ:
NONE. SARA TITLE III: SECTIONS 302/304:EMERGENCY PLANNING &
NOTIFICATION (40 CFR PART 355) - EXTREMELY HAZ SUBSTANCES: NONE;
THRESHOLD PLANNING QTY: NONE. S ECTIONS 311/312: HAZ CHEM REPORTING
(40 CFR PART 370): IMMEDIATE HEALTH: NO; DELAYED HEALTH: NO;
PRESSURE: YES; REACTIVITY: YES; FIRE: YES. SECTION 313: TOXIC CHEM
RELEASE REPORTING (40 CFR PART 372): ACETYLENE DOES NOT REQUIRE
REPORTING UNDER SECTION 313.
Federal Regulatory Information:40 CFR PART 68: RISK MANAGEMENT PROGRAMS
FOR CHEM ACCIDENTAL RELEASE: ACETYLENE IS A REGULATED SUBSTANCE IN
QTYS OF 10,000 LBS (4,553 KG) OR GREATER. TSCA: TOXIC SUBSTANCE
CONTROL ACT: ACETYLENE IS LI STED ON THE TSCA INVENTORY. OSHA: 29
CFR PART 1910.119: PROCESS SAFETY MANAGEMENT OF HIGHLY HAZ CHEMS:
OXYGEN IS NOT LISTED IN APPENDIX A AS HIGHLY HAZ CHEM. HOWEVER, ANY
PROCESS THAT INVOLVES A FLAMM GAS ON SITE IN ONE LOCATION, IN QTYS
OF 10.000 LBS (4,553 KG) OR GREATER IS COVERED UNDER THIS REG
UNLESS IT IS USED AS FUEL.
State Regulatory Information:CALIFORNIA:PROP 65: THIS PROD DOES NOT
CONTAIN ANY LISTED SUBSTANCES WHICH THE STATE OF CALIFORNIA REQS
WARNING UNDER THIS STATUTE. -- ECOLOGICAL INFO:VALVE CAP OPENINGS.
DOING SO MAY DMG VALVE, CAUSI NG LEAK TO OCCUR. USE ADJUSTABLE
STRAP WRENCH TO REMOVE OVER-TIGHT/RUSTED CAPS. NEVER STRIKE ARC ON
COMPRESSED GAS CYL/MAKE CYL PART OF ELEC CIRCUIT. USE PROPER CGA
CONNECTIONS, DO NOT USE ADAPTERS. U SE PIPING & EQUP ADEQUATELY
DESIGNED TO W/STAND PRESS TO BE ENCOUNTERED. USE CHECK VALVE/OTHER
PROT APPARATUS IN ANY LINE/PIPING FROM CYL TO PREVENT REVERSE
FLOW.