Material Identification        CAS Number: 75-46-7 Formula: CHF3 Molecular Weight: 70.02

Tradenames and Synonyms:  HFC-23, Trifluoromethane

 

Company: BEST INC., LIMITED.

Add.: Rooms 1318-20, 13/F Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hong Kong

Tel: +852-30774337       Fax:+852-30774338

Components:           Material METHANE, TRIFLUORO-            CAS Number% 75-46-7  100%

INHALATION: Overexposure by inhalation may include nonspecific discomfort such as nausea, headache, or weakness; temporary nervous system depression with anesthetic effects such as dizziness, headache, confusion, incoordination, and loss  consciousness; or with gross overexposure (>20%), possibly temporary alteration of the heart's electrical activity withirregular pulse, palpitations, or inadequate circulation  

EYE CONTACT:   May cause frostbite.

SKIN CONTACT:  May cause frostbite.

ADDITIONAL HEALTH EFFECTS: 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.  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.

INHALATION:  Immediately remove to fresh air.  Keep person calm. Call a physician.  If not breathing, give artificial respiration.  If breathing is difficult, give oxygen.
SKIN CONTACT: Flush with water.  Treat for frostbite if necessary by gently warming affected areas.
EYE CONTACT:  In case of liquid contact, immediately flush eyes with plenty of water for 15 minutes.  Call a physician.
ADDITIONAL HEALTH EFFECTS:  Ingestion is not considered a potential route of exposure.
NOTES TO PHYSICIANS:  Because of possible disturbances of cardiac rhythm, catecholamine drugs, such a epinephrine, should be considered only as a last resort in life-threatening emergencies.

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:  Containers 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 limits, therefore, stop all work and ventilate to disperse refrigerant vapors from the work area before using any open flames.  R-23 is not flammable in air at temperatures up to 100°C (212°F) at atmospheric pressure.  However, mixtures of R-23 with high concentrations of air at elevated pressure and/or temperature can become combustible in the presence of an ignition source.  R-23 can also become combustible in an oxygen enriched environment (oxygen concentrations greater than that in air).  Whether a mixture containing R-23 and air, or R23 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, R-23 should not be allowed to exist with air above atmospheric pressure or at high temperatures; or in an oxygen enriched environment.  For example, R-23 should NOT be mixed with air under pressure for leak testing or other purposes.

EXTINGUISHING MEDIA:  As appropriate for combustibles in area.

FIRE FIGHTING INSTRUCTIONS:  Use water spray or fog to cool containers.  Self-contained breathing apparatus (SCBA) is required if cylinders rupture or release under fire conditions.  Water runoff should be contained and neutralized prior to release.

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:  Material evaporates at atmospheric pressure (vaporizes).  Ventilate area, especially low places where heavy vapors might collect.  Remove open flames. Wear self-contained breathing apparatus (SCBA) for large spills or when a release occurs.

FIRE EMERGENCY EXPOSURE LIMITS (FEEL):  Are established to facilitate the safe release of a fire extinguishant into spaces normally occupied by people to extinguish a fire or prevent an explosion and specify airborne concentrations of brief durations which should not result in permanent adverse health effects or interfere with escape. Fire Emergency Exposure Limit (FEEL) for this material is 20% v/v for up to 15 minutes with a 1 minute not-to-exceed ceiling of 23% v/v.

HANDLING (PERSONNEL):  Avoid breathing high concentrations of vapor.  Avoid contact of liquid with eyes and prolonged skin exposure.  Use with sufficient ventilation to keep employee exposure below recommended limits.

STORAGE:  Clean, dry area.  Do not heat above 51.7°C (125°F)

Exposure Controls/Personal Protection  ENGINEERING CONTROLS:  Normal ventilation for routine 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 should be used when handling liquid.  Chemical splash goggles should be worn 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 spill or release occurs.

PHYSICAL DATA:
Boiling Point: -82.1°C (-115.8°F)
Vapor Pressure: 686 psig at 25°C (77°F)

Vapor Density: 2.4 (Air = 1)
% Volatiles: 100 WT%

Solubility in Water: 0.1 WT% @ 25°C (77°F)
Odor: Slight ethereal
Form: Compressed gas or liquefied gas
Color: Clear, colorless
Density: 1.44 g/cc at -82°C (-115.7°F)

CHEMICAL STABILITY:  Material is stable.  However, avoid open flames and high temperatures.
CONDITIONS TO AVOID:  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 HF, COF2, or CO.  These materials are toxic and irritating.  Contact should be
avoided.
POLYMERIZATION:  Will not occur.

ANIMAL DATA: R-23

SKIN: R-23 is untested for irritancy, and for animal sensitization.

EYE: R-23 is untested for irritancy, and for animal sensitization.

INHALATION: 4-hour LC50:  >663,000 ppm in rats.  Effects from single high inhalation exposure to R-23 include anaesthetic effects, and nonspecific effects such as weight loss were observed at concentrations >22%.  No cardiac sensitization was observed in dogs after breathing 800,000 ppm for periods of 5-10 minutes following epinephrine challenge.  In another test, dogs exposed to up to 30% or up to 50% (with aditional oxygen), had no positive responses.  No cardiac sensitization occurred in baboons exposed by inhalation to 10%, 30%, 50%, or 70% R-23 before or after an epinephrine challenge; there was a dose-related decrease in heart rates and differences in respiratory rates during exposure. CARCINOGENIC, DEVELOPMENTAL, REPRODUCTIVE, MUTAGENIC EFFECTS:  No animal tests are available to define the carcinogenic hazards of R-23.  The maternal and developmental NOAEL was 50,000 ppm. R-23 is not considered a unique developmental hazard to the conceptus.  There were no developmental or reproductive effects.

ADDITIONAL INFORMATIOIN:Tests have shown that R-23 does not produce genetic damage in bacterial or mammalian cell cultures. It has not produced genetic damage in tests on animals.

WASTE DISPOSAL:  Reclaim by distillation or remove to permitted waste facility.  Dispose of in accordance with all Federal, State, and local regulations