MATERIAL SAFETY DATA SHEET

IDENTIFICATION:

Name:

GHG -HP REFRIGERANT-12 SUBSTITUTE (GHG-HP)



Chemical Family:

Halogenated Hydrocarbons + Paraffinic Hydrocarbons



Formula:



Mixture of i-C4H10 / CH3CClF2 / CHClF2







Synonyms:

Methyl propane / R-142b or Isotron-142b or chlorodifluoroethane or HCFC-142b /

R-22 or Freon-22 or Genetron-22 or HCFC-22 / R-600a



CAS Name:                                         CAS Registry No.

Isobutane                                         75-28-5

1-Chloro-1,1-difluoroethane                       75-68-3

Chlorodifluoromethane                             75-45-6





Manufacturer / Distributor:



Peoples Welding Supply, Inc

426 Brown St Levee

W. Lafayette, In 47906

(765) 743-3839



Emergency phone (24 hr): (800) 535-5053 or (765) 463-2672



PHYSICAL DATA:



Boiling (bubble) point: -26.23 F         Percent volatile by volume: 100

Boiling (dew) point: -10.05 F            Mol. Wt: 89.87

Density (liquid 70 F) 70.27 LB/FT3        Pressure: 113 PSIA @ 75 F

Vapor Density (Air = 1): @ 70F 1.29 LB/FT3     Solubility in H2O: slight

pH Information: Neutral               Freezing point: Not Established



Appearance and odor:

Colorless liquified gas with faint etheral odor



HAZARDOUS COMPONENTS



Material(s):                                      Approximate weight % :

Isobutane                                         4

chlorodifluoroethane (R-142b)                     31

chlorodifluoromethane (R-22)                      65

HAZARDOUS REACTIVITY



Stability:

Material is stable. However, avoid open flames and high temperatures.



Incompatibility (materials to avoid):



Strong oxidants, including oxygen.

Freshly scraped aluminum, Alkali metals, and Alkali earth metals

(sodium, magnesium, etc), may cause exothermic reaction. Aluminum

in refrigeration systems contains an oxide/chloride coating, so

it does not react.



Hazardous decomposition products:



May decompose at high temperatures (above 400F - 500F), and from contact with

hot metal, heating elements, pilot lights, internal combustion engines, and

open flames. Decomposition products may include hydrofluoric and hydrochloric

acids, chlorine, fluorine, possibly phosgene, carbon dioxide, and

carbon monoxide.



Polymerization:



Will not occur.



FIRE AND EXPLOSION DATA:



Flash Point:



NONE



Autoignition temperature:



N/A



Autodecompisition Temperature:



400 - 500F or above



Fire and Explosion:



Cylinders may vent or rupture in fire conditions, leading to decomposition.



Extinguishing Media:



Water spray.



Special Fire Fighting Instructions:



Use self-contained breathing apparatus. Use water spray to cool cylinders

to prevent bursting or venting under fire conditions.



Product may be flammable if mixed with large quantities of air at greater

than atmospheric pressure.

If cylinders of product have been leaking (vapor leak), the remaining product

may become weakly flammable. Heat of combustion is around 1/10 of

that of hydrocarbon gasses, but no flash point.



Cylinders of USED refrigerant, may contain large amounts of refrigeration

(mineral) oil. A liquid leak or cylinder venting in a fire will bring out

a cloud of oil mist. This oil mist can be very flammable (in the order of

gasoline).



HEALTH HAZARD INFORMATION



Principle Health Hazards:



Inhalation: Vapor is heavier than air and can cause suffocation by displacing

oxygen available for breathing. Contact with liquid may cause frostbite.





Breathing high concentrations of vapor may cause light headedness, giddiness,

shortness of breath, and may lead to narcosis, cardiac irregularities,

unconsciousness or death. May cause eye irritation.



Toxicity / Exposure limits:



OSHA and ACGIH              Not established, but reccommend TWA 1000 PPM.



Isobutane.



Humans exposed to Isobutane, 500 PPM, 8 hours/day, 5 days/week, for 4 weeks,

showed no cardiac, pulmonary or other functional abnormalities.



Chlorodifluoroethane.



Inhalation - Rat - 4 HR LC50 = 128,000 PPM.



Chlorodifluoromethane.



Low in toxicity at concentrations as high as 4% (40,000 ppm). Narcotic

effects have been seen at 200,000 ppm. Heart effeciency (animal studies)

has been reported to be reduced at concentrations of over 25,000 ppm.

Cardiac sensitization to epinephrine has been observed at concentrations

of 50,000 ppm.



First Aid



Inhalation: Remove to fresh air, call a physician. If not breathing, give

artificial respiration. If breathing is difficult, give oxygen. Do not

give epinephrine or similar drugs.



Note to physicians: Because of possible increased risk or eliciting

cardiac dysrythmias, catecholamine drugs, such as epinephrine, should be

considered only as a last resort in life threating emergencies.



Eyes: Flush immediately with water for at least 15 minutes. Call a physician.

Skin: Flush with water, warm slowly (cool water) if frostbite. Call a

physician.



PRECAUTIONS/PROCEDURES



Spill or leak:



Using a self-contained air supply and frostbite protection, personnel should

attempt to close valves or repair the source of the leak, if it is safely

possible to do so. If a large quantity is released, evacuate personnel,

and allow to dissipate.



SHIPPING INFORMATION



Proper shipping name:     Compressed Gas, N.O.S UN1956

DOT placard:              Nonflammable gas



Do not heat above 125F



Other information:



Date revised: 12/14/97.



Person responsible:       George Goble

                          Peoples Welding Supply Inc

                          426 Brown St. Levee

                          W. Lafayette, IN 47906

                          (765) 743-3839 or (765) 463-2672