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"SUVA" 409A

  6129FR                                             Revised 29-AUG-2001



CHEMICAL PRODUCT/COMPANY IDENTIFICATION


  Material Identification

     "SUVA" is a registered trademark of DuPont.

     Formula                 : CHCLF2/CHCLFCF3/CH3CCLF2
     Molecular Weight        : 97.45
     CAS Name                : FORANE (R) FX-56 GENETRON 409A

  Tradenames and Synonyms

     HCFC BLEND OF HCFC-22, HCFC-124 & HCFC-142b

  Company Identification

     MANUFACTURER/DISTRIBUTOR
                    DuPont Fluoroproducts
                    1007 Market Street
                    Wilmington, DE  19898

     PHONE NUMBERS
       Product Information  : 1-800-441-7515 (outside the U.S.
                              302-774-1000)
       Transport Emergency  : CHEMTREC 1-800-424-9300(outside U.S.
                              703-527-3887)
       Medical Emergency    : 1-800-441-3637 (outside the U.S.
                              302-774-1000)


COMPOSITION/INFORMATION ON INGREDIENTS


  Components

  Material                                  CAS Number    %
 *CHLORODIFLUOROMETHANE (HCFC-22)              75-45-6   60
 *1-CHLORO-1,1-DIFLUOROETHANE                  75-68-3   15
    (HCFC-142b)
 *ETHANE, 2-CHLORO-1,1,1,2-TETRAFLUORO       2837-89-0   25
    (HCFC-124)

  * Disclosure as a toxic chemical is required under Section 313 of
  Title III of the Superfund Amendments and Reauthorization Act of 1986
  and 40 CFR part 372.


HAZARDS IDENTIFICATION


  Potential Health Effects

     INHALATION: Immediate effects of overexposure may cause
     central nervous system depression with dizziness, confusion,
     incoordination, drowsiness or unconsciousness.  Gross
     overexposure may cause: Irregular heart beat with a strange
     sensation in the chest, "heart thumping", apprehension,
     lightheadedness, feeling of fainting, dizziness, weakness,
     sometimes progressing to loss of consciousness and death.
     Other effects include: Suffocation, if air is displaced by
     vapors or fatality from gross over-exposure.  Decomposition
     products are hazardous.

     SKIN CONTACT: Short-term overexposure may cause frostbite,
     if liquid or escaping vapor contacts the skin.  Repeated
     and/or prolonged exposure may cause: Defatting of the skin
     with itching, redness or rash.

     EYE CONTACT: Contact with the vapor or aerosol may cause eye
     irritation with tearing, pain, blurred vision or
     "frostbite-like" effects.

     ADDITIONAL HEALTH EFFECTS: Increased susceptibility to the
     effects of this material may be observed in persons with
     pre-existing disease of the: central nervous system,
     cardiovascular system.

  Carcinogenicity Information

  None of the components present in this material at concentrations
  equal to or greater than 0.1% are listed by IARC, NTP, OSHA or ACGIH
  as a carcinogen.


FIRST AID MEASURES


  First Aid

     INHALATION

     If inhaled, immediately remove to fresh air.  Keep person calm.
     If not breathing, give artificial respiration.  If breathing is
     difficult, give oxygen.  Call a physician.

     SKIN CONTACT

     Flush area with lukewarm water.  Do not use hot water.  If
     frostbite has occurred, call a physician.

     EYE CONTACT

     In case of contact, immediately flush eyes with plenty of water
     for at least 15 minutes.  Call a physician.

     INGESTION

     Ingestion is not considered a potential route of exposure.

  Notes to Physicians

     THIS MATERIAL MAY MAKE THE HEART MORE SUSCEPTIBLE TO ARRHYTHMIAS.
     Catecholamines such as adrenaline, and other compounds having
     similar effects, should be reserved for emergencies and then used
     only with special caution.


FIRE FIGHTING MEASURES


# Flammable Properties

     Flash Point :  No flash point

     Flammable Limits in Air, % by Volume:
     LEL         :  None per ASTM E681
     UEL         :  None per ASTM E681
     Autoignition:  Not determined

     Fire and Explosion Hazards:

     Cylinders may rupture under fire conditions.  Decomposition
     may occur.

     Contact of welding or soldering torch flame with high
     concentrations of refrigerant can result in visible changes
     in the size and color of torch flames.  This flame effect
     will only occur in concentrations of product well above the
     recommended exposure limit, therefore stop all work and
     ventilate to disperse refrigerant vapors from the work area
     before using any open flames.

     R-409A is not flammable in air at temperatures up to 100
     deg C (212 deg F) at atmospheric pressure.  However,
     mixtures of R-409A with high concentrations of air at
     elevated pressure and/or temperature can become combustible
     in the presence of an ignition source.  R-409A can also
     become combustible in an oxygen enriched environment (oxygen
     concentrations greater than that in air).  Whether a mixture
     containing R-409A and air, or R-409A in an oxygen enriched
     atmosphere becomes combustible depends on the
     inter-relationship of 1) the temperature 2) the pressure,
     and 3) the proportion of oxygen in the mixture.  In general,
     R-409A should not be allowed to exist with air above
     atmospheric pressure or at high temperatures; or in an
     oxygen enriched environment.  For example:  R-409A should
     NOT be mixed with air under pressure for leak testing or
     other purposes.

     Experimental data have also been reported which indicate
     combustibility of HCFC-22, a component in this blend, in
     the presence of chlorine.

  Extinguishing Media

     Water Spray, Water Fog, CO2, Dry Chemical, Water.

  Fire Fighting Instructions

     Wear self-contained breathing apparatus (SCBA) and full protective
     equipment.  Cool tank/container with water spray.  Keep personnel
     removed and upwind of fire.  Shut off source of fuel, if possible
     and without risk.

     Water runoff should be contained and neutralized prior to
     release.

     Hydrogen fluoride or hydrogen chloride fumes emitted during
     a fire can react with water to form hydrofluoric acid or
     hydrochloric acid.  Wear neoprene gloves when handling
     refuse from fire.


ACCIDENTAL RELEASE MEASURES


  Safeguards (Personnel)

     NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL)
     sections before proceeding with clean-up.  Use appropriate
     PERSONAL PROTECTIVE EQUIPMENT during clean-up.

  Accidental Release Measures

     Ventilate area using forced ventilation, especially in low
     or enclosed places where heavy vapors might collect.  Remove
     open flames.  Use self-contained breathing apparatus (SCBA)
     for large spills or releases.


HANDLING AND STORAGE


  Handling (Personnel)

     Do not get in eyes, on skin or clothing.  Do not breathe vapor or
     mist.  Use with sufficient ventilation to keep employee exposure
     below recommended limits.  Wash contaminated clothing prior to
     reuse.

  Handling (Physical Aspects)

     Keep away from heat, sparks and flames.  Open container only in
     well-ventilated area.

  Storage

     Keep away from heat, sparks and flames.  Store in a well
     ventilated area away from heat and sunlight.

     Close container after each use.

     Store below 120 deg F (49 deg C).


EXPOSURE CONTROLS/PERSONAL PROTECTION


  Engineering Controls

     Use only with adequate ventilation especially for enclosed and low
     area where vapors can accumulate.

  Personal Protective Equipment

     EYE/FACE PROTECTION

     Wear coverall chemical splash goggles.

     RESPIRATORS

     Wear NIOSH approved respiratory protection, as appropriate.

     PROTECTIVE CLOTHING

     Where there is potential for skin contact have available, and wear
     as appropriate, impervious gloves, apron, pants, and jacket.

     Lined butyl gloves should be used to avoid prolonged or repeated
     exposure.

  Exposure Guidelines

   Applicable Exposure Limits
     CHLORODIFLUOROMETHANE (HCFC-22)
     PEL   (OSHA)             : None Established
     TLV   (ACGIH)            : 1,000 ppm, 3,540 mg/m3, 8 Hr. TWA, A4
     AEL * (DuPont)           : None Established

     1-CHLORO-1,1-DIFLUOROETHANE
     PEL   (OSHA)             : None Established
     TLV   (ACGIH)            : None Established
     AEL * (DuPont)           : 1000 ppm, 8 Hr. TWA
     WEEL  (AIHA)             : 1000 ppm, 8 Hr. TWA

     ETHANE, 2-CHLORO-1,1,1,2-TETRAFLUORO
     PEL   (OSHA)             : None Established
     TLV   (ACGIH)            : None Established
     AEL * (DuPont)           : 1000 ppm, 8 & 12 Hr. TWA
     WEEL  (AIHA)             : 1000 ppm, 8 Hr. TWA

     * AEL is DuPont's Acceptable Exposure Limit.  Where governmentally
     imposed occupational exposure limits which are lower than the AEL
     are in effect, such limits shall take precedence.


PHYSICAL AND CHEMICAL PROPERTIES


  Physical Data

     Boiling Point           : -31 F (-35 C)
     Vapor Density           : 3.36 (Air=1.0)
     Solubility in Water     : Negligible
     Specific Gravity        : 1.215 @ 70 F (21 C)
     Vapor Pressure          : 107 psia @ 70 F (21 C)
     % Volatiles             : 100 %
     Odor                    : Faint, Ethereal, Ether.
     Form                    : Liquified Gas.
     Color                   : Clear, Colorless.


STABILITY AND REACTIVITY


  Chemical Stability

     Stable.

     Conditions contributing to instability:  Thermal
     decomposition due to exposure to heat (>800 deg F) or fire.

  Conditions to Avoid

     Avoid flames, sparks, extremely hot metal, heating elements,
     pilot lights, static electricity, combustion engines,
     ignition sources, etc.

  Incompatibility with Other Materials

     Avoid contact with strong alkali or alkaline earth metals,
     finely powdered metals such as aluminum, magnesium or zinc
     and strong oxidizers since they may react with or accelerate
     decomposition of this material.

  Decomposition

     Thermal decomposition products include hydrogen fluoride,
     hydrogen chloride, carbon monoxide, carbon dioxide and
     chlorine and possibly carbonyl halides.  These materials are
     toxic and irritating.  Contact should be avoided.


TOXICOLOGICAL INFORMATION


  Animal Data

     CHLORODIFLUOROMETHANE (HCFC-22)

     INHALATION: 4 hour, LC50, rat: 220,000 ppm

     Animal testing indicates this material is a slight eye and
     skin irritant, but not a skin sensitizer.

     INGESTION: Long-term exposure caused: No significant
     toxicological effects.

     Single exposure to high doses caused: Central nervous system
     depression.  Inactivity or anaesthesia.  Lung noise. Altered
     respiratory rate.  Histopathological changes of the liver.
     Cardiac sensitization, a potentially fatal disturbance of
     heart rhythm associated with a heightened sensitivity to the
     action of epinephrine.  Repeated exposure caused: No
     significant toxicological effects.  Long-term exposure
     caused: Reduced weight gain.  Increased adrenals, kidney,
     liver, pituitary weight.

     ADDITIONAL TOXICOLOGICAL EFFECTS:

     In chronic inhalation studies, HCFC-22, at a concentration
     of 50,000 ppm (v/v), produced a small, but statistically
     significant increase of late-occurring tumors involving
     salivary glands in male rats, but not female rats or male or
     female mice.  In the same studies, no increased incidence of
     tumors was seen in either species at concentrations of
     10,000 ppm or 1000 ppm (v/v).  Animal data show
     developmental effects only at exposure levels producing
     other toxic effects in the adult animal.  This material is
     not considered a unique developmental hazard to the
     conceptus. Reproductive data on male animals show: No change
     in reproductive performance.  Specific studies to evaluate
     the effect on female reproductive performance have not been
     conducted; however, limited information obtained from
     studies on developmental toxicity do not indicate adverse
     effects on female reproductive performance.  This material
     produces genetic damage in bacterial cell cultures.  In
     mammalian cell cultures and animals, this material has not
     produced genetic toxicity.  In animal testing, this material
     has not caused permanent genetic damage in reproductive
     cells of mammals (has not produced heritable genetic
     damage).

     1-CHLORO-1,1-DIFLUOROETHANE (HCFC-142b)

         Inhalation 2 hour LC50: 447,642  ppm in rats

     The compound is untested for skin irritancy, is not an eye
     irritant, and is untested for animal sensitization.

     Inhalation:  Toxic effects of single inhalation exposures
     include respiratory irritation, loss of reflexes, and
     unconsciousness. Cardiac sensitization was seen in dogs
     exposed to concentrations of 5% and higher.  Exposure of
     dogs or monkeys to concentrations of 5 to 20% for five
     minutes caused decreased blood pressure (hypotension).
     Repeated exposure produced only irritation of the lungs.

     Tests in animals demonstrate no carcinogenic, developmental,
     or reproductive toxicity.

     The compound does not produce genetic damage in animals or
     in bacterial and mammalian cell cultures.  It does not
     produce heritable genetic damage.

     ETHANE, 2-CHLORO-1,1,1,2-TETRAFLUORO (HCFC-124)

     INHALATION:  4 hour, ALC, rat: 230,000 - 300,000 ppm.

     Single exposure caused: Cardiac sensitization, a potentially
     fatal disturbance of heart rhythm associated with a
     heightened sensitivity to the action of epinephrine.
     Lowest-Observed-Adverse-Effect-Level for cardiac
     sensitization: 25,000 ppm.  Single exposure caused: the
     following temporary effects - Inactivity or anaesthesia. Low
     blood pressure. Repeated exposure caused: Decreased body
     weight.  Altered clinical chemistry.  These effects were
     reversible.  Repeated exposure caused: the following
     temporary effects - Inactivity or anaesthesia.  Lethargy.
     Incoordination.  Altered respiratory rate.  One study
     showed: Increased liver weight.

     CARCINOGENIC, DEVELOPMENTAL, REPRODUCTIVE, MUTAGENIC
     EFFECTS:
     In animal testing this material has not caused
     carcinogenicity, developmental toxicity.  No animal data are
     available to define the following effects of this material:
     reproductive toxicity. Tests have shown that this material
     does not cause genetic damage in bacterial or mammalian cell
     cultures, or in animals.  This material has not been tested
     for its ability to cause permanent genetic damage in
     reproductive cells of mammals (not tested for heritable
     genetic damage).


ECOLOGICAL INFORMATION


  Ecotoxicological Information

     AQUATIC TOXICITY:

     CHLORODIFLUOROMETHANE (HCFC-22)
        48 hour EC50 - Daphnia magna: 433 mg/L


DISPOSAL CONSIDERATIONS


  Waste Disposal

     Recycle or reclaim if possible.  Reclaimed material may be
     incinerated but toxic and corrosive combustion products (HF
     and HCL) must be handled appropriately.

     Consult Federal, State or local authorities for proper
     disposal procedures.


TRANSPORTATION INFORMATION


  Shipping Information

     DOT/IMO/IATA
     Proper Shipping Name    : LIQUEFIED GAS, N.O.S.
                               (CHLORODIFLUOROMETHANE,
                               CHLOROTETRAFLUOROETHANE)
     Hazard Class            : 2.2
     UN No.                  : UN 3163
     DOT/IMO Label           : NONFLAMMABLE GAS


OTHER INFORMATION


  NFPA, NPCA-HMIS

     NPCA-HMIS Rating
     Health                  : 1
     Flammability            : 0
     Reactivity              : 1

  ----------------------------------------------------------------------

     The data in this Material Safety Data Sheet relates only to the
     specific material designated herein and does not relate to use in
     combination with any other material or in any process.

     Responsibility for MSDS : MSDS Coordinator
     >                       : DuPont Fluoroproducts
     Address                 : Wilmington, DE 19898
     Telephone               : (800) 441-7515

     # Indicates updated section.

                                 End of MSDS