=====================  Product Identification  =====================

MSDS NAME:SULFUR HEXAFLUORIDE
NIIN:00-985-7283
Status Code:A
MSDS Number: CJFYW
=== Responsible Party ===
Company:ADVANCED SPECIALTY GASES INC
Address:ONE POST STREET SUITE 2525
City:SAN FRANCISCO
State:CA
ZIP:94104
Country:US
Info Phone Num:415-398-7167
Emergency Phone Num:415-398-7167
Chemtrec Ind/Phone:(800)424-9300
CAGE:0YCT7
=== Contractor Identification ===
Company:ADVANCED SPECIALTY GASES INC
Address:ONE POST STREET SUITE 2525
Box:City:SAN FRANCISCO
State:CA
ZIP:94104
Country:US
Phone:415-398-7167
Contract Num:SP0450-99-M-JA62
CAGE:0YCT7

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

Name:SULFUR HEXAFLUORIDE
CAS:2551-62-4
RTECS #:WS4900000
= Wt:99.8
Code:F
Other REC Limits:NONE RECOMMENDED
OSHA PEL:1000 PPM
ACGIH TLV:1000 PPM; 9596

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

LD50 LC50 Mixture:TLV IS 1000 PPM.
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: CENTRAL NERVOUS SYSTEM,
    RESPIRATORY TRACT (HMIS). ACUTE - ACTS AS AN ASPHYXIANT. SULFUR
    HEXAFLUORIDE IS NON-TOXIC, BUT THE LIBERATION OF LARGE AMOUNT IN A
    CONFINED AREA COULD DISPLACE T HE AMOUNT OF OXYGEN IN AIR NECESSARY
    TO SUPPORT LIFE.  INHALATION OF OXYGEN-DEFICIENT ATMOSPHERE CAN
    CAUSE HEADACHE, LABORED BREATHING, DIZZINESS, RINGING IN EARS, AND
    EVENTUAL UNCONSCIOUSNESS. INGEST ION, EYE AND SKIN ARE NOT LIKLEY.
    CHRONIC - UNKNOWN.
Explanation of Carcinogenicity:NONE.
Effects of Overexposure:BREATHING DIFFICULTIES, HEADACHE, DIZZINESS,
    UNCONSCIOUSNESS, DEATH
Medical Cond Aggravated by Exposure:PERSONS IN ILL HEALTH WHERE SUCH
    ILLNESS WOULD BE AGGRAVATED BY EXPOSURE TO SULFUR HEXAFLUORIDE
    SHOULD NOT BE ALLOWED TO WORK WITH OR HANDLE THESE PRODUCTS.

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

First Aid:PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF
    OVEREXPOSURE TO SULFUR HEXAFLUORIDE. RESCUE PERSONNEL SHOULD BE
    EQUIPPED WITH SELF-CONTAINED BREATHING APPARATUS. INHALATION:
    CONSCIOUS PERSONS SH OULD BE ASSISTED TO AN UNCONTAMINATED AREA AND
    INHALE FRESH AIR. QUICK REMOVAL FROM CONTAMINATED AREA IS MOST
    IMPORTANT. UNCONSCIOUS PERSONS SHOULD BE MOVED TO AN UNCONTAMINATED
    AREA, GIVEN ASSISTED R ESPIRATION AND SUPPLEMENTAL OXYGEN. FURTHER
    TREATMENT SHOULD BE SYMPTOMATIC AND SUPPORTIVE.

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

Flash Point:NONFLAMMABLE
Lower Limits:NOT RELEVANT
Upper Limits:NOT RELEVANT
Extinguishing Media:WATER SPRAY, CARBON DIOXIDE, FOAM OR DRY CHEMICAL
    FOR SURROUNDING FIRE.
Fire Fighting Procedures:WEAR NIOSH APPROVED SELF-CONTAINED BREATHING
    APPARATUS AND PROTECTIVE CLOTHINGS. USE WATER FROM DISTANCE TO COOL
    FIRE-EXPOSED CYLINDERS OR RELOCATE CYLINDERS IF SAFE TO DO SO.
Unusual Fire/Explosion Hazard:CYLINDERS MAY EXPLODE IN HEAT OF FIRE.
    FIRE MAY PRODUCE IRRITATING AND POISONOUS GASES.

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

Spill Release Procedures:EVACUATE ALL PERSONNEL FROM AFFECTED AREA. USE
    APPROPRIATE PROTECTIVE EQUIPMENT. VENTILATE ARE. IF LEAK IS IN
    USER'S EQUIPMENT, BE CERTAIN TO PURGE PIPING WITH AN INERT GAS
    PRIOR TO ATTEMPTING REPAIRS . IF LEAK IS FROM CONTAINER OR
    CONTAINER VALVE, CONTACT YOUR CLOSEST SUPPLIER LOCATION OR CALL
    CHEMTREC (800) 424-9300.
Neutralizing Agent:NOT RELEVENT

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

Handling and Storage Precautions:STORE IN COOL, DRY, WELL-VENTILATED
    AREA, AWAY FROM HEAVILY TRAFFICKED AREAS AND EMERGENCY EXISTS.
    CYLINDERS SHOULD BE STORED UPRIGHT AND FIRMLY SECURED. STORAGE AREA
    TEMPERATURES SHOULD NOT EXCEED 12 5F (52C). SEPARATE FULL FROM
    EMPTY CYLINDERS. USE A FIRST IN FIRST-OUT INVENTORY SYSTEM.
Other Precautions:USE ONLY IN WELLVENTILATED AREAS. DO NOT DRAG, SLIDE,
    OR ROLL CYLINDERS. USE A SUITABLE HAND TRUCK FOR CYLINDER MOVEMENT.
    USE A PRESSURE REDUCING REGULATOR WHEN CONNECTING TO LOWER PRESSURE
    SYSTEM. DO	NOT HEAT CYLINDER TO INCREASE DISCHARGE RATE. AVOID
    BREATHING GAS. USE A TRAP IN DISCHARGE LINE TO  PREVENT BACK FLOW.

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

Respiratory Protection:POSITIVE PRESSURE AIR-LINE WITH MASK OR A
    NIOSH-APPROVED POSITIVE-PRESSURE SELF-CONTAINED BREATHING APPARATUS
    SHOULD BE AVAILABLE FOR EMERGENCY USE.
Ventilation:HOOD WITH FORCED VENTILATION.  LOCAL EXHAUST VENTILATION TO
    MEET TLV REQUIREMENTS.
Protective Gloves:ANY MATERIAL
Eye Protection:SAFETY GLASSES OR GOGGLES
Other Protective Equipment:SAFETY SHOES, COVERALLS, EYE WASH STATION
    MAY BE NECESSARY.
Work Hygienic Practices:OBSERVE GOOD PERSONAL HYGIENE PRACTICES AND
    RECOMMENDED PROCEDURES.
Supplemental Safety and Health

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

HCC:G3
NRC/State Lic Num:NOT RELEVENT
Boiling Pt:=-63.8C, -82.8F
B.P. Text:SUBLIMES
Melt/Freeze Pt:=-50.8C, -59.4F
M.P/F.P Text:FREEZING POINT
Vapor Pres:16498 @70F
Vapor Density:5.13
Spec Gravity:0.3847 LB/FT @ 70F
Viscosity:NOT RELEVANT
Evaporation Rate & Reference:NOT RELEVANT
Solubility in Water:SLIGHTLY
Appearance and Odor:COLORLESS, ODORLESS GAS
Percent Volatiles by Volume:99.8

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

Stability Indicator/Materials to Avoid:YES
SOME METALS
Stability Condition to Avoid:HEATING CYLINDERS. STABLE ABOVE 400F ONLY
    IF KEPT IN ALUMINUM, STAINLESS STEEL, COPPER, BRASS OR SILVER
    CONTAINERS. AVOID OTHER METALS.
Hazardous Decomposition Products:MAY FORM SF2, S2F2, SF4, AND S2F10. IF
    OXYGEN IS PRESENT, THIONYL FLUORIDE COMPOUNDS SUCH AS SOF2, AND
    SO2F2 WILL BE FORMED AS WELL AS OTHER TOXIC FLUORIDE COMPOUNDS.

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

Waste Disposal Methods:DISPOSE OF IN ACCORDANCE WITH LOCAL, STATE AND
    FEDERAL REGULATIONS. DO NOT ATTEMPT TO DISPOSE OF WASTE OR UNUSED
    QUANTITIES. RETURN IN THE SHIPPING CONTAINER PROPERLY LABELED, WITH
    ANY VALVE OUTLET PL UGS OR CAPS SECURED AND VALVE PROTECTION CAP IN
    PLACE TO YOUR SUPPLIER. CONTACT YOUR CLOSEST SUPPLIE R OR CALL
    CHEMTREC 800-424-9300.

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

 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.

*** END OF RECORD ***