PRAXAIR INC -- ARGON  -- 6685-00-861-2570
<pre>=====================  Product Identification  =====================

Product ID:ARGON
MSDS Date:12/01/1992
FSC:6685
NIIN:00-861-2570
Status Code:A
=== Responsible Party ===
Company Name:PRAXAIR INC
Address:39 OLD RIDGEBURY RD
Box:2153
City:DANBURY
State:CT
ZIP:06810-5113
Country:US
Info Phone Num:203-794-5783; 800-772-9257
Emergency Phone Num:(800)424-9300
Resp. Party Other MSDS Num.:L-4563-E
Chemtrec Ind/Phone:(800)424-9300
CAGE:0LV01
=== Contractor Identification ===
Company Name:MOELLER INSTRUMENT CO
Address:126 MAIN ST
Box:668
City:IVORYTON
State:CT
ZIP:06442
Country:US
Phone:860-767-2104
Contract Num:SP0440-99-M-L774
CAGE:76526
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
= Wt:100.

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

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:UNKNOWN  Skin:UNKNOWN  Ingestion:NO
Health Hazards Acute and Chronic:INGESTED-PRODUCT IS A GAS AT NORMAL
    TEMPERATURE AND PRESSURE. SKIN ABSORPTION-NO EVIDENCE OF ADVERSE
    EFFECTS FROM AVAILABLE INFORMATION. INHALED-ASPHYXIANT. MODERATE
    CONCENTRATIONS MAY CAUSE HEADACHE,	DROWSINESS, EXCITATION, EXCESS
    SALAVATION, VOMITING AND UNCONSCIOUSNESS. SKIN CONTACT-NO HARMFUL
    EFFECTS EXPECTED FROM VAPOR. EYES-NO HARMFUL EFFECTS EXPECTED FROM
    VAPOR. CHRONIC: NO EVIDENCE OF ADVE RSE EFFECTS FROM AVAILABLE
    INFORMATION.
Explanation of Carcinogenicity:NONE SPECIFIED BY MANUFACTURER.
Effects of Overexposure:HEADACHE, DROWSINESS, DIZZINESS, EXCITATION,
    EXCESS SALIVATION, VOMITING AND UNCONSCIOUSNESS.
Medical Cond Aggravated by Exposure:OVEREXPOSUREIS UNLIKELY TO
    AGGRAVATE EXISTING MEDICAL CONDITIONS.

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

First Aid:SWALLOWING: THIS PRODUCT IS A GAS AT NORMAL TEMPERATURE AND
    PRESSURE. SKIN CONTACT: FLUSH WITH WATER. INAHLED: REMOVE TO FRESH
    AIR. GIVE ARTIFICIAL RESPIRATION IF NOT BREATHING. GIVE OXYGEN IF
    BREATHI NG DIFFICULT. CALL A PHYSICIAN. EYES: FLUSH WITH WATER.
    NOTE TO PHYSICIANS: THIS PRODUCT IS INERT. THERE IS NO SPECIFIC
    ANTIDOTE. TREATMENT OF OVEREXPOSURE SHOULD BE DIRECTED AT THE
    CONTROL OF SYMPTOM S AND THE CLINICAL CONDITION.

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

Extinguishing Media:ARGON CANNOT CATCH FIRE. USE MEDIA APPROPRIATE FOR
    SURROUNDING FIRE.
Fire Fighting Procedures:EVACUATE ALL PERSONNEL FROM DANGER AREA.
    IMMEDIATELY COOL CYLINDERS WITH WATER SPRAY FROM MAXIMUM DISTANCE
    UNTIL COOL, THEN CONTAINERS AWAY FROM FIRE WITHOUT RISK. SHUT OFF
    LEAK IF WITHOUT RISK.
Unusual Fire/Explosion Hazard:ARCS AND SPARKS CAN IGNITE COMBUSTIBLES.
    REFER TO AMERICAN NATIONAL STANDARD Z49.1 "SAFETY IN WELDING AND
    CUTTING" FOR  FIRE PREVENTION INFORMATION DURING USE OF WELDING AND
    ALLIED PROCEDURES.

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

Spill Release Procedures:SRON IS AN ASPHYXIANT. EVACUATE ALL PERSONNEL
    FROM DANGER AREA. USE SELF-CONTAINED BREATHING APPARATUS WHERE
    NEEDED. SHUT OFF CYLINDER IF WITHOUT RISK. VENTILATE AREA OF LEAK
    OR MOVE CYLINDER TO WELL- VENTILATED AREA. TEST AREA, ESPECIALLY
    CONFINED AREAS, FOR SUFFICIENT OXYGEN CONTENT PRIOR TO PERMITTING 
    RE-ENTRY OF PERSONNEL.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:ARCS & SPARKS DURING USE COULD BE THE
    SOURCE OF IGNITION OF COMBUSTIBLE MATERIALS. PREVENT FIRES. STORE &
    USE WITH ADEQUATE VENTILATION. CLOSE VALAVE WHEN NOT IN USE OR
    EMPTY. DO NOT STRIKE ARC ON CYL INDER. THE DEFECT PRODUCED BY AN
    ARC BURN COULD LEAD TO CYLINDER RUPTURE.
Other Precautions:DO NOT GROUND CYLINDER OR ALLOW TO BECOME PART OF AN
    ELECTRICAL CIRCUIT. NEVER WORK ON A PRESSURIZED SYSTEM.

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

Respiratory Protection:USE AIR PRIFYING OR AIR SUPPLIED RESPIRATORS, AS
    APPROPRIATE, WHERE THE LOCAL AND/OR GENERAL EXHAUST VENTILATION IS
    NOT ADEQUATE TO KEEP WORKER EXPOSURE BELOW THE APPLICABLE TLV(S)
    DURING WELDING OPER ATIONS USING ARGON. AIR SUPPLIED RESPIRATOR IS
    REQUIRED WHILE WORKING IN CONFINED SPACES.
Ventilation:USE LOCAL EXHAUST/MECHANICAL EXHAUST, AS APPROPRIATE, TO
    MAINTAIN WORKER EXPOSURE BELOW TLV(S).
Protective Gloves:WELDING GLOVES RECOMMENDED.
Eye Protection:HELMET OR FACESHIELD WITH PROPER FILTER LENS.
Other Protective Equipment:AS NEEDED, WEAR HAND, HEAD AND BODY
    PROTECTION WHICH HELP TO PREVENT INJURY FROM RADIATION, SPARKS, &
    ELECTRICAL SHOCK. SEE ANSI Z49.1. AS A MINIMUM INCLUDES WELDERS
    GLOVES & FACESHIELD.
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
THE RESPIRATORY PROTECTION USE MUST CONFORM TO OSHA RULES AS ASPECIFIED
    IN 29 CFR 1910.134.

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

HCC:G3
Boiling Pt:=-185.9C, -302.6F
Melt/Freeze Pt:=-189.4C, -309.F
Appearance and Odor:COLORLESS, ODORLESS GAS AT NORMAL TEMPERATURE AND
    PRESSURE.

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

Stability Indicator/Materials to Avoid:YES
NONE CURRENTLY KNOWN. ARGON IS CHEMICALLY INERT.
Stability Condition to Avoid:HIGH PRESSURE GAS. CLOSE VALVE WHEN NOT IN
    USE AND WHEN EMPTY. USE WITH EQUIPMENT RATED TO ADEQUATELY
    WITHSTAND PRESSURES TO BE ENCOUNTERED. DO NOT STRIKE ARC ON
    CYLINDER.
Hazardous Decomposition Products:OZONE AND NITROGEN OXIDES MAY BE
    FORMED BY THE RADIATION FROM THE ARC. OTHER DECOMPOSITION PRODUCTS
    OF NORMAL OPERAIONS ORIGINATE FROM THE VOLITIZATION, REACTION OR
    OXIDATION OF MATERIAL BEING WORKED.

===================  Toxicological Information	===================

Toxicological Information:NONE SPECIFIED BY MANUFACTURER.

=====================  Ecological Information  =====================

Ecological:NONE SPECIFIED BY MANUFACTURER.

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

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

===================  MSDS Transport Information  ===================

Transport Information:NONE SPECIFIED BY MANUFACTURER.

=====================  Regulatory Information  =====================

SARA Title III Information:NONE SPECIFIED BY MANUFACTURER.
Federal Regulatory Information:NONE SPECIFIED BY MANUFACTURER.
State Regulatory Information:THIS PRODUCT IS SUBJECT TO THE
    PENNSYLVANIA WORKER AND COMMUNITY-RIGHT-TO-KNOW ACT (35 P.S.
    SECTIONS 7301-7320.

=======================  Other Information  =======================

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