PRAXAIR INC -- 25% CARBON DIOXIDE-75% ARGON MIXTURE  -- 6830-00N053509
<pre>=====================  Product Identification  =====================

Product ID:25% CARBON DIOXIDE-75% ARGON MIXTURE
MSDS Date:10/01/1993
FSC:6830
NIIN:00N053509
=== Responsible Party ===
Company Name:PRAXAIR INC
Address:39 OLD RIDGEBURY RD
City:DANBURY
State:CT
ZIP:06810-5113
Country:US
Info Phone Num:203-794-5782
Emergency Phone Num:203-794-5782
CAGE:0LV01
=== Contractor Identification ===
Company Name:PRAXAIR, INC.
Address:39 OLD RIDGEBURY RD
Box:City:DANBURY
State:CT
ZIP:06810-5113
Country:US
Phone:800-772-9247; 800-PRAXAIR
CAGE:0LV01

=============  Composition/Information on Ingredients  =============

Ingred Name:ARGON
CAS:7440-37-1
RTECS #:CF2300000
Fraction by Wt: 75%
OSHA PEL:N/K 
ACGIH TLV:ASPHYXIANT

Ingred Name:CARBON DIOXIDE
CAS:124-38-9
RTECS #:FF6400000
Fraction by Wt: 25%
OSHA PEL:5000 PPM
ACGIH TLV:5000PPM/30000STEL

Ingred Name:HAZ DECOMP PROD: BY RADIA FROM ARC. OTHER DECOMP PRODS OF
    NORM OPERATION ORIGINATE FROM VOLAT, RXN/OXIDATION OF MATL.
RTECS #:9999999ZZ

Ingred Name:EFTS OF OVEREXP: SUCH AS WATERY EYES, NOSE & THROAT IRRIT,
    HDCH, DIZZ, DFCLTY BRTHG, FREQUENT COUGHING/CHEST (ING 5)
RTECS #:9999999ZZ

Ingred Name:ING 4: PAINS. CHRONIC: PROTRACTED INHAL OF AIR CONTAMINANTS
    MAY LEAD TO THEIR ACCUM IN LUNGS, A CNDTN WHICH MAY (ING 6)
RTECS #:9999999ZZ

Ingred Name:ING 5: BE SEEN AS DENSE AREAS ON CHEST X-RAYS. SEV OF
    CHANGE IS PROPORTIONAL TO LENGTH OF EXPOS. CHANGES SEEN ARE(ING 7)
RTECS #:9999999ZZ

Ingred Name:ING 6: NOT NEC ASSOC W/SYMPS/SIGNS OF REDUCED LUNG
    FUNC/DISEASE. IN ADDN, CHANGES ON X-RAYS MAY BE CAUSED BY (ING 8)
RTECS #:9999999ZZ

Ingred Name:ING 7: NON-WORK RELATED FACTORS SUCH AS SMOKING, ETC.
RTECS #:9999999ZZ

Ingred Name:VENT: MAY BE ACCEPTABLE PROVIDED THAT IT IS ADEQ TO
    MAINTAIN CONC OF HAZ FUMES & GASES <TLV IN WORKER'S BRTHG ZONE.
RTECS #:9999999ZZ

Ingred Name:OTHER PROT EQUIP: & ELEC SHOCK. AT A MIN THIS INCL WELDER'S
    GLOVES & PROT FSHLD, & MAY INCL ARM PROTS, APRONS, (ING 11)
RTECS #:9999999ZZ

Ingred Name:ING 10: HATS, SHOULDER PROT, AS WELL AS DARK SUBSTANTIAL
    CLTHG. TRAIN WORKER NOT TO TOUCH LIVE ELECTRICAL PARTS.
RTECS #:9999999ZZ

Ingred Name:OTHER PREC: POSITION OF WORKER'S HEAD W/RESPECT TO FUME
    PLUME, AS WELL AS PRESENCE OF CONTAMINANTS IN ATM (ING 13)
RTECS #:9999999ZZ

Ingred Name:ING 12: (CHLORINATED HYDROCARBON VAPS FROM CLEANING &
    DEGREASING ACTIVITIES). TRAIN WORKER TO KEEP HEAD OUT OF (ING 14)
RTECS #:9999999ZZ

Ingred Name:ING 13: FUMES. AVOID USING ELEC ARCS IN PRESENCE OF
    CHLORINATED HYDROCARBON VAPS-HIGHLY TOX PHOSGENE MAY BE (ING 15)
RTECS #:9999999ZZ

Ingred Name:ING 14: PRDCED. AVOID ARC OPERATIONS ON PARTS W/PHOSPHATE
    RESIDUES (ANTI-RUST, CLEANING PREPARATIONS)-HIGHLY (ING 16)
RTECS #:9999999ZZ

Ingred Name:ING 15: TOX PHOSGENE MAY BE PRDCED. ONE REC WAY TO
    DETERMINE COMPOSITION & QTY OF FUMES & GASES TO WHICH WORKERS(ING
    17)
RTECS #:9999999ZZ

Ingred Name:ING 16: ARE EXPOSED IS TO TAKE AIR SAMPLE FROM INSIDE
    WORKER'S HELMET IF WORN/IN WORKER'S BRTHG ZONE. READ & (ING 18)
RTECS #:9999999ZZ

Ingred Name:ING 17: UNDERSTAND MFR'S INSTRUCTIONS & PREC LABEL ON PROD.
    ARCS & SPKS DURING USE COULD BE SOURCE OF IGNIT OF (ING 19)
RTECS #:9999999ZZ

Ingred Name:ING 18: COMBUST MATLS. PVNT FIRES. HIGH PRESS GAS MIX. USE
    PIPING & EQUIP ADEQ DESIGNED TO WITHSTAND PRESS TO (ING 20)
RTECS #:9999999ZZ

Ingred Name:ING 19: BE ENCOUNTERED. GAS CAN CAUSE RAPID SUFFOCATION DUE
    TO OXYGEN DEFICIENCY. STORE & USE W/ADEQ VENT. (ING 21)
RTECS #:9999999ZZ

Ingred Name:ING 20: CLOSE VALVE WHEN NOT IN USE & WHEN EMPTY. DO NOT
    STRIKE ARC ON CYL. DEFECT PRDCED BY ARC BURN COULD (ING 22)
RTECS #:9999999ZZ

Ingred Name:ING 21: LEAD TO CYL RUPTURE. DO NOT GROUND CYL/ALLOW TO
    BECOME PART OF ELEC UNIT. NEVER WORK ON PRESSURIZED SYSTEM.
RTECS #:9999999ZZ

=====================  Hazards Identification  =====================

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACUTE: INHAL: ASPHY. MOD CONCS MAY
    CAUSE HDCH, DROW, DIZZ, STINGING OF NOSE & THROAT, EXCITATION,
    RAPID BRTHG, EXCESS SALIVATION, VOMIT, & UNCON. DMG TO RETINAL
    GANGLION CELLS & CNS MAY OCCUR. A SINGL E STUDY HAS SHOWN INCR IN
    HEART DEFECTSIN RATS EXPOSED TO 6% CARBON DIOXIDE IN AIR FOR 24 HRS
    AT (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:HLTH HAZ: DIFFERENT TIMES DURING GESTATION.
    THERE IS NO EVIDENCE THAT CARBON DIOXIDE IS TERATOGENIC TO HUMANS.
    GASES, FUMES, & DUSTS MAY CAUSE IRRIT TO EYES, LUNGS, NOSE, &
    THROAT. SOME TOX GASES ASSO C W/WELDING & RELATED PROCESSES MAY
    CAUSE PULM EDEMA, ASPHY, & DEATH. ACUTE OVEREXP MAY INCL SIGNS &
    SYMPS (ING 4)
Medical Cond Aggravated by Exposure:A KNOWLEDGE OF THE AVAILABLE
    TOXICOLOGY INFORMATION AND OF THE PHYSICAL AND CHEMICAL PROPERTIES
    OF THE MATERIAL SUGGEST THAT OVEREXPOSURE IS UNLIKELY TO AGGRAVATE
    EXISTING MEDICAL CONDITIONS.

=======================  First Aid Measures  =======================

First Aid:INGEST: PROD IS A GAS AT NORM TEMP & PRESS. CALL MD IMMED .
    SKIN: FLUSH W/COPIOUS AMTS OF WATER. SEE MD . INHAL: REMOVE TO
    FRESH AIR. OBTAIN MED ATTN IF NOT BRTHG. QUALIFIED PERS MAY GIVE 
    OXYGEN IF BRTHG IS DFCLT. OBTAIN MED ATTN. EYE: FLUSH W/WATER FOR
    AT LEAST 15 MIN. OBTAIN MED ATTN IF DISCOMFORT PERSISTS. NOTES TO
    MD: THERE IS NO SPECIFIC ANTIDOTE. TREATMENT OF OVEREXP (SUP DAT)

=====================  Fire Fighting Measures  =====================

Extinguishing Media:GAS MIXTURE CANNOT CATCH FIRE. USE MEDIA
    APPROPRIATE FOR SURROUNDING FIRE.
Fire Fighting Procedures:WEAR NIOSH APPRVD SCBA & FULL PROT EQUIP .
    EVACUATE ALL PERS FROM DANGER AREA. IMMED COOL CYLS W/WATER SPRAY
    FROM MAX DIST UNTIL COOL, THEN MOVE (SUP DAT)
Unusual Fire/Explosion Hazard:GAS MIX CANNOT CATCH FIRE. CONTR MAY
    RUPTURE DUE TO HEAT OF FIRE. NO PART OF A CONTR SHOULD BE SUBJECTED
    TO A TEMP >52C (APPROX 125F). MOST CONTRS ARE (SUP DAT)

==================  Accidental Release Measures  ==================

Spill Release Procedures:ASPHY. EVACUATE ALL PERS FROM DANGER AREA. USE
    NIOSH APPRVD SCBA WHERE NEEDED. SHUT OFF CYL IF W/OUT RISK. VENT
    AREA OF LEAK/MOVE CYL TO WELL-VENTD AREA. TEST AREA, ESP CONFINED
    AREAS, FOR SUFFICIENT  OXYGEN CONTENT PRIOR TO RE-ENTRY OF
    PERSONNEL.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

======================	Handling and Storage  ======================

Handling and Storage Precautions:FUMES & GASES CANNOT BE CLASSIFIED
    SIMPLY. COMPOSITION & QTY OF BOTH ARE DEPENDENT UPON METAL BEING
    WORKED, PROCESS, PROC & ELECTRODES USED.
Other Precautions:OTHER CNDTNS WHICH ALSO INFLUENCE COMPOSITION & QTY
    OF FUMES & GASES TO WHICH WORKERS MAY BE EXPOSED INCL: COATINGS ON
    METAL BEING WORKED (PAINT, PLATING/GALVANIZING), NUMBER OF WORKERS
    & VOL OF WORK  AREA, QUALITY & AMT OF VENT, (ING 12)

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:USE NIOSH APPRVD AIR-PURIFYING/AIR-SUPP RESPS AS
    POSS, WHERE LOC &/GEN EXHST VENT IS NOT ADEQ TO KEEP EXPOS < TLV
    DURING WELDING. NIOSH APPRVD AIR-SUPP RESP REQD WHILE WORKING IN
    CONFINED SPACES.
Ventilation:USE LOC EXHST SYS, IF NEC, TO MAINTAIN CONC OF HAZ FUMES &
    GASES < TLV. UNDER CERTAIN CNDTNS, GEN EXHST VENT (ING 9)
Protective Gloves:WELDING GLOVES RECOMMENDED.
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:ANSI APPRVD EMER EYEWASH & DELUGE SHOWER .
    WEAR HAND, HEAD, & BODY PROT TO PVNT INJURY FROM RADIA, SPKS, (ING
    10)
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
FIRE FIGHT PROC: CONTRS AWAY FROM FIRE AREA IF W/OUT RISK. SHUT OFF
    LEAK IF W/OUT RISK. ARCS & SPKS CAN IGNITE COMBUSTS. REFER TO ANSI
    Z49.1. EXPLO HAZ: PROVIDED W/PRESS-RELIEF DEVICE DESIGNED TO VENT 
    CONTENTS WHEN THEY ARE EXPOSED TO ELEVATED TEMP. FIRST AID PROC:
    SHOULD BE DIRECTED AT CTL OF SYMPS & CLINICAL CNDTN.

==================  Physical/Chemical Properties  ==================

Vapor Pres:GAS
Vapor Density:1.42
Spec Gravity:GAS (H*2O=1)
Solubility in Water:NEGLIGIBLE
Appearance and Odor:COLORLESS, ODORLESS GAS AT NORMAL TEMPERATURE AND
    PRESSURE.
Percent Volatiles by Volume:100

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
TITANIUM BURNS IN CARBON DIOXIDE ABOVE 550C. MAGNESIUM BURNS IN CARBON
    DIOXIDE ABOVE 775C.
Stability Condition to Avoid:NONE CURRENTLY KNOWN.
Hazardous Decomposition Products:ARC PROCESS MAY FORM GASEOUS RXN PRODS
    SUCH AS CARBON MONOXIDE & DIOXIDE. OZONE & NITROGEN OXIDES MAY BE
    FORMED (ING 3)

====================  Disposal Considerations  ====================

Waste Disposal Methods:SLOWLY RELEASE INTO ATMOSPHERE. DISCARD ANY
    PRODUCT, RESIDUE, DISPOSABLE CONTAINER OR LINER IN AN
    ENVIRONMENTALLY ACCEPTABLE MANNER IN FULL COMPLIANCE WITH FEDERAL,
    STATE AND LOCAL REGULATIONS.

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