The MSDS format adheres to the standards and regulatory requirements

 of the United States and may not meet regulatory requirements

 in other countries.

 DuPont Page 1

 Material Safety Data Sheet

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

 "SUVA" 134a

 2187FR Revised 4-NOV-2002

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

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

 CHEMICAL PRODUCT/COMPANY IDENTIFICATION

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

 Material Identification

 Corporate MSDS Number : DU000693

 CAS Number : 811-97-2

 Formula : CH2FCF3

 CAS Name : "SUVA" 134a

 Tradenames and Synonyms

 HFC 134a

 VT1505

 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 %

 ETHANE, 1,1,1,2-TETRAFLUORO- 811-97-2 100

 (HFC-134a)

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

 HAZARDS IDENTIFICATION

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

 Potential Health Effects

 INHALATION

 ETHANE, 1,1,1,2-TETRAFLUORO-
 2187FR DuPont Page 2

 Material Safety Data Sheet

 (HAZARDS IDENTIFICATION - Continued)

 Gross overexposure may cause: Central nervous system depression

 with dizziness, confusion, incoordination, drowsiness or

 unconsciousness. 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. Suffocation, if air is displaced

 by vapors.

 SKIN CONTACT

 ETHANE, 1,1,1,2-TETRAFLUORO-

 Immediate effects of overexposure may include: Frostbite, if

 liquid or escaping vapor contacts the skin.

 EYE CONTACT

 ETHANE, 1,1,1,2-TETRAFLUORO-

 "Frostbite-like" effects may occur if the liquid or escaping

 vapors contact the eyes.

 ADDITIONAL HEALTH EFFECTS

 ETHANE, 1,1,1,2-TETRAFLUORO-

 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 high concentrations are 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

 In case of contact, immediately flush skin with plenty of water

 for at least 15 minutes, while removing contaminated clothing and

 shoes. Call a physician. Wash contaminated clothing before

 reuse. Treat for frostbite if necessary by gently warming

 affected area.

 EYE CONTACT
 2187FR DuPont Page 3

 Material Safety Data Sheet

 (FIRST AID MEASURES - Continued)

 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

 Because of possible disturbances of cardiac rhythm, catecholamine

 drugs, such as epinephrine, should only be used with special

 caution in situations of emergency life support.

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

 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 : >743 C(>1369 F)

 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.

 HFC-134a is not flammable in air at temperatures up to

 100 deg. C (212 deg. F) at atmospheric pressure. However,

 mixtures of HFC-134a with high concentrations of air at

 elevated pressure and/or temperature can become combustible

 in the presence of an ignition source. HFC-134a can

 also become combustible in an oxygen enriched environment

 (oxygen concentrations greater than that in air). Whether a

 mixture containing HFC-134a and air, or HFC-134a in

 an oxygen enriched atmosphere become combustible depends on

 the inter-relationship of 1) the temperature 2) the

 pressure, and 3) the proportion of oxygen in the mixture. In

 general, HFC-134a should not be allowed to exist with

 air above atmospheric pressure or at high temperatures; or

 in an oxygen enriched environment. For example HFC-134a

 should NOT be mixed with air under pressure for leak testing

 or other purposes.
 2187FR DuPont Page 4

 Material Safety Data Sheet

 (FIRE FIGHTING MEASURES - Continued)

 Experimental data have also been reported which indicate

 combustibility of HFC-134a in the presence of certain

 concentrations of chlorine.

 Extinguishing Media

 Use media appropriate for surrounding material.

 Fire Fighting Instructions

 Cool tank/container with water spray. Self-contained breathing

 apparatus (SCBA) may be required if cylinders rupture or release

 under fire conditions.

 Water runoff should be contained and neutralized prior to

 release.

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

 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.

 Ventilate area, especially low or enclosed places where heavy

 vapors might collect. Remove open flames. Use self-contained

 breathing apparatus (SCBA) if large spill or leak occurs.

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

 HANDLING AND STORAGE

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

 Handling (Personnel)

 Use with sufficient ventilation to keep employee exposure below

 recommended limits.

 Handling (Physical Aspects)

 HFC-134a should not be mixed with air for leak testing or used for

 any other purpose above atmospheric pressure. See Flammable

 Properties section. Contact with chlorine or other strong

 oxidizing agents should also be avoided.

 # Storage

 Store in a clean, dry place. Do not heat above 52 C (126 F).
 2187FR DuPont Page 5

 Material Safety Data Sheet

 (HANDLING AND STORAGE - Continued)

 Valve protection caps and valve cutlet threaded plugs must

 remain in place unless container is secured with valve

 outlet piped to use point. Do NOT drag, slide or roll

 cylinders. Use a suitable hand truck for cylinder movement.

 Never attempt to lift cylinder by its cap. Use a pressure

 reducing regulator when connecting cylinder to lower

 pressure (>3000 psig) piping or systems. Do NOT heat

 cylinder. Use a check valve or trap in the discharge line

 to prevent hazardous back flow into the cylinder.

 Cylinders should be stored upright and firmly secured to

 prevent falling or being knocked over. Separate full

 containers from empty containers. Storage area temperatures

 should not exceed 125 deg F (52 deg C) and should be free of

 combustible materials. Avoid area where salt or other

 corrosive materials are present. Avoid excessive inventory

 and storage time. Use a first-in first-out system. Keep

 accurate inventory records.

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

 EXPOSURE CONTROLS/PERSONAL PROTECTION

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

 Engineering Controls

 Normal ventilation for standard manufacturing procedures is

 generally adequate. Local exhaust should be used when large

 amounts are released. Mechanical ventilation should be used in

 low or enclosed places. Refrigerant concentration monitors may be

 necessary to determine vapor concentrations in work areas prior to

 use of torches or other open flames, or if employees are entering

 enclosed areas.

 Personal Protective Equipment

 Impervious gloves and chemical splash goggles should be used when

 handling liquid.

 Under normal manufacturing conditions, no respiratory protection

 is required when using this product.

 Self-contained breathing apparatus (SCBA) is required if a large

 release occurs.

 Exposure Guidelines
 2187FR DuPont Page 6

 Material Safety Data Sheet

 Exposure Limits

 "SUVA" 134a

 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 : -26.5 C (-15.7 F) @ 736 mm Hg

 Vapor Pressure : 96 psia @ 25 C (77 F)

 Vapor Density : 3.6 (Air=1.0) @ 25 C (77 F)

 % Volatiles : 100 WT%

 Solubility in Water : 0.15 WT% @ 25 C (77 F)

 @ 14.7 psia

 Odor : Ether (slight).

 Form : Liquified Gas.

 Color : Colorless.

 Liquid Density : 1.21 g/cm3 @ 25 C (77 F)

 Specific Gravity : 1.208 @ 77 F (25 C)

 Evaporation Rate : (CCL4 = 1); greater than 1

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

 STABILITY AND REACTIVITY

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

 Chemical Stability

 Stable.

 Conditions to Avoid

 Avoid open flames and high temperatures.

 Incompatibility with Other Materials

 Incompatible with alkali or alkaline earth metals - powdered Al,

 Zn, Be, etc.

 Decomposition

 Decomposition products are hazardous. This material can be

 decomposed by high temperatures (open flames, glowing metal

 surfaces, etc.) forming hydrofluoric acid and possibly carbonyl

 fluoride.

 These materials are toxic and irritating. Contact should be

 avoided.
 2187FR DuPont Page 7

 Material Safety Data Sheet

 (STABILITY AND REACTIVITY - Continued)

 Polymerization

 Polymerization will not occur.

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

 TOXICOLOGICAL INFORMATION

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

 Animal Data

 ETHANE, 1,1,1,2-TETRAFLUORO-

 EYE:

 A short duration spray of vapor produced very slight eye

 irritation.

 SKIN:

 Animal testing indicates this material is a slight skin irritant,

 but not a skin sensitizer.

 INHALATION:

 4 hour, ALC, rat: 567,000 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:

 75,000 ppm. Single exposure caused: Lethargy. Narcosis.

 Increased respiratory rates. These effects were temporary.

 Single exposure to near lethal doses caused: Pulmonary edema.

 Repeated exposure caused: Increased adrenals, liver, spleen

 weight. Decreased uterine, prostate weight. Repeated dosing of

 higher concentrations caused: the following temporary effects -

 Tremors. Incoordination.

 CARCINOGENIC, DEVELOPMENTAL, REPRODUCTIVE, MUTAGENIC EFFECTS:

 In a two-year inhalation study, HFC-134a, at a concentration of

 50,000 ppm, produced an increase in late-occurring benign

 testicular tumors, testicular hyperplasia and testicular weight.

 The no-effect-level for this study was 10,000 ppm. Animal data

 show slight fetotoxicity but only at exposure levels producing

 other toxic effects in the adult animal. Reproductive data on

 male mice show: No change in reproductive performance. Tests have

 shown that this material does not cause genetic damage in

 bacterial or mammalian cell cultures, or in animals. In animal

 testing, this material has not caused permanent genetic damage in

 reproductive cells of mammals (has not produced heritable genetic

 damage).
 2187FR DuPont Page 8

 Material Safety Data Sheet

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

 ECOLOGICAL INFORMATION

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

 Ecotoxicological Information

 AQUATIC TOXICITY:

 48 hour EC50 - Daphnia magna: 980 mg/L.

 96 hour LC50 - Rainbow trout: 450 mg/L

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

 DISPOSAL CONSIDERATIONS

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

 Waste Disposal

 Contaminated HFC-134a can be recovered by distillation or removed

 to a permitted waste disposal facility. Comply with Federal,

 State, and local regulations.

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

 TRANSPORTATION INFORMATION

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

 Shipping Information

 DOT/IMO

 Proper Shipping Name : 1,1,1,2-TETRAFLUOROETHANE

 Hazard Class : 2.2

 UN No. : 3159

 DOT/IMO Label : NONFLAMMABLE GAS

 Shipping Containers

 Tank Cars.

 Tank Trucks.

 Ton Tanks.

 Cylinders.

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

 REGULATORY INFORMATION

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

 U.S. Federal Regulations

 TSCA Inventory Status : Reported/Included.

 TITLE III HAZARD CLASSIFICATIONS SECTIONS 311, 312

 Acute : Yes

 Chronic : Yes

 Fire : No

 Reactivity : No

 Pressure : Yes

 HAZARDOUS CHEMICAL LISTS

 SARA Extremely Hazardous Substance: No

 CERCLA Hazardous Substance : No

 SARA Toxic Chemical : No
 2187FR DuPont Page 9

 Material Safety Data Sheet

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

 OTHER INFORMATION

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

 NFPA, NPCA-HMIS

 NPCA-HMIS Rating

 Health : 1

 Flammability : 0

 Reactivity : 1

 Personal Protection rating to be supplied by user depending on use

 conditions.

 Additional Information

 MEDICAL USE: CAUTION: Do not use in medical applications

 involving permanent implantation in the human body. For other

 medical applications see DuPont CAUTION Bulletin No. H-50102.

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

 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.

 This information is based upon technical information believed to be

 reliable. It is subject to revision as additional knowledge and

 experience is gained.

 End of MSDS