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"PORTA" 22



CHEMICAL PRODUCT/COMPANY IDENTIFICATION


  Material Identification

     Formula                 : CHClF2
     Molecular Weight        : 86.47
     

  Tradenames and Synonyms
     CHLORODIFLUOROMETHANE
     HCFC-22
     CC0335
     Dymel 22

  Company Identification
		    Leempeng Enterprise (Pte) Ltd
                    No. 7 Kallang Way 5
                    Kolam Ayer Industrial Park
		    Singapore (349026)	
     PHONE NUMBERS
       Product Information  : (65) 97483334
                              
       Transport Emergency  : (65) 97483334
                              
       Medical Emergency    : (65) 97483334

COMPOSITION/INFORMATION ON INGREDIENTS


  Components

  Material                                  CAS Number    %
 *"PORTA" 22 METHANE, CHLORODIFLUORO-          75-45-6  100

  * 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 of high concentrations of vapor is harmful and
     may cause heart irregularities, unconsciousness or death.
     Intentional misuse or deliberate inhalation may cause death
     without warning.  Vapor reduces oxygen available for
     breathing and is heavier than air.  Liquid contact can cause
     frostbite.

     HUMAN HEALTH EFFECTS:

     Skin contact with the liquid may include frostbite.
     Prolonged overexposure may cause defatting or dryness of the
     skin.  Eye contact with liquid may include eye irritation
     with discomfort, tearing, or blurring of vision.

     Inhalation may include temporary nervous system depression
     with anesthetic effects such as dizziness, headache,
     confusion, incoordination, and loss of consciousness.

     Higher exposures may lead to temporary alteration of the
     heart's electrical activity with irregular pulse,
     palpitations, or inadequate circulation.  Fatality may occur
     from gross overexposure.

     Individuals with preexisting diseases of the central nervous
     or cardiovascular system may have increased susceptibility
     to the toxicity of excessive exposures.

  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

     In case of 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

     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             : Will not burn
     Autodecomposition       : 632 C (1170 F)

     Other burning materials may cause "PORTA" 22 to burn weakly.

     Chlorodifluoromethane is not flammable at ambient
     temperatures and atmospheric pressure.  However,
     chlorodifluoromethane has been shown in tests to be
     combustible at pressures as low as 60 psig at ambient
     temperature when mixed with air at concentrations of 65
     volume % air.  Experimental data have also been reported
     which indicate combustibility of "PORTA" 22 in the presence
     of certain concentrations of chlorine.

     Fire and Explosion Hazards:

     Cylinders may rupture under fire conditions.  Decomposition
     may occur.

  Extinguishing Media

     As appropriate for combustibles in area.  Extinguishant
     for other burning material in area is sufficient to stop
     burning.

  Fire Fighting Instructions

     Use water spray or fog to cool containers.  Self-contained
     breathing apparatus (SCBA) is required if cylinders rupture
     or contents are released 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.

  Accidental Release Measures

     Ventilate area, especially 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)

     Use with sufficient ventilation to keep employee exposure
     below recommended limits.  "PORTA" 22 should not be mixed
     with air for leak testing.  In general, it should not be
     used or allowed to be present with high concentrations of
     air above atmospheric pressure.  Contact with chlorine or
     other strong oxidizing agents should also be avoided.

  Storage

     Clean, dry area.  Do not heat above 52 C (125 F).


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.

  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

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

     * AEL is 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           : -40.8 C (-41.4 F)
     Vapor Pressure          : 151 psig @ 25 C (77 F)
     Vapor Density           : 3.03 (Air=1.0) @ 25 C (77 F)
     % Volatiles             : 100 WT%
     Evaporation Rate        : >1 (CCl4=1.0)
     Solubility in Water     : 0.3 WT% @ 25 C (77 F)
     pH                      : Neutral
     Odor                    : Slight ethereal
     Form                    : Liquified Gas.
     Color                   : Clear, Colorless.
     Liquid Density          : 1.194 g/cm3 @ 25 C (77 F)


STABILITY AND REACTIVITY


  Chemical Stability

     Material is stable.  However, 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.  "PORTA" 22 can be
     decomposed by high temperatures (open flames, glowing metal
     surfaces, etc.) forming hydrochloric and hydrofluoric acids,
     and possibly carbonyl halides.  These materials are toxic
     and irritating.  Contact should be avoided.

  Polymerization

     Polymerization will not occur.


TOXICOLOGICAL INFORMATION


  Animal Data

     INHALATION:

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

     The compound is a skin irritant and a slight eye irritant,
     but is not a skin sensitizer in animals.

     Effects from single high exposures include central nervous
     system depression, anesthesia, rapid breathing, lung
     congestion and microscopic liver changes.  Cardiac
     sensitization occurred in dogs at 50,000 ppm or greater from
     the action of exogenous epinephrine.

     No toxic effects or abnormal histopathological observations
     occurred in rats repeatedly exposed to concentrations
     ranging from 10,000 to 50,000 ppm (v/v).  Long-term
     exposures to 50,000 ppm (v/v) of vapors produced organ
     weight increases and a decrease in body weight gain, but no
     increased mortality or adverse hematological effects.  In
     chronic inhalation studies, "PORTA" 22, at a concentration o
     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 1,000 ppm (v/v).

     Long-term administration in corn oil produced no effects on
     body weight or mortality.

     "PORTA" 22 was mutagenic in some strains of bacteria in
     bacterial cell cultures, but not mammalian cell cultures or
     animals.  It did not cause heritable genetic damage in
     mammals.

     A slight, but significant increase in developmental toxicity
     was observed at high concentrations (50,000 ppm) of
     "PORTA" 22, a concentration which also produced toxic
     effectS in the adult animal.  Based on these findings, and
     other negative developmental studies, "PORTA" 22 is not
     considered a unique hazard to the conceptus.  Studies of
     the effects of "PORTA" 22 on male reproductive performance
     have been negative.  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 at concentrations up to
     50,000 ppm.


ECOLOGICAL INFORMATION


  Ecotoxicological Information

     Aquatic Toxicity:

     "PORTA" 22

     48 hour EC50 - Daphnia magna: 433 mg/L


DISPOSAL CONSIDERATIONS


  Waste Disposal

     Comply with Federal, State, and local regulations.  Reclaim
     by distillation or remove to a permitted waste disposal
     facility.


TRANSPORTATION INFORMATION


  Shipping Information

     DOT/IMO
     Proper Shipping Name    : CHLORODIFLUOROMETHANE
     Hazard Class            : 2.2
     UN No.                  : 1018
     DOT/IMO Label           : NONFLAMMABLE GAS

     Shipping Containers

     Tank Cars.
     Tank Trucks.
     Cylinders.


REGULATORY INFORMATION


  U.S. Federal Regulations

     TSCA Inventory Status   : Reported/Included.

     TITLE III HAZARD CLASSIFICATIONS SECTIONS 311, 312

     Acute      : Yes
     Chronic    : No
     Fire       : No
     Reactivity : No
     Pressure   : Yes

     HAZARDOUS CHEMICAL LISTS

     SARA Extremely Hazardous Substance: No
     CERCLA Hazardous Substance        : No
     SARA Toxic Chemical        - See Components Section


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.

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

     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.

     
                                 End of MSDS