Trifluoromethane, refrigerated liquid
- Freon 23
- Methyl trifluoride
- Carbon trifluoride
- Methane, trifluoro
A colorless odorless gas.
Intermediate in organic synth, direct coolant for infrared detector cells, blowing agent for urethane foams.
Registry Numbers and Inventories.
S 23 38
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
35300 (25 C)
Vapor density (air=1)
1.935 (solid); 1.52 (liquid)g/cm3 (-100 C)
Solubility in water
0.0146 cp (25 C)
1.00043 (25 C)
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
May be stored over water.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Wear positive pressure self-contained breathing apparatus (SCBA).
Make no contact with the spilled material. Stop leak if you can do it without risk. Do not direct water at spill or source of leak. If possible, turn leaking containers so that gas escapes rather than liquid. Allow substance to evaporate. Ventilate the area.
Stable up to 1150 C.
Attacks magnesium and its alloys.
When heated to decomposition it emits toxic fumes of hydrogen fluoride. All fluorocarbons will undergo thermal decomposition when exposed to flame or red-hot metal.
Upper exp. limit, %
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Do not use water on material itself. Use water spray to knock-down vapors.
May burn but does not ignite readily.
Containers may explode when heated. Ruptured cylinders may rocket.
When heated to decompose it emits toxic fumes ofhydrogen fluoride.
Headache, dizziness, and disorientation are common. Cerebral edema may be found on autopsy. Dichlorodifluoromethane was not teratogenic in rats and rabbits. <br>The reproductive effects of 1,1,1,2-tetrafluoroethane were studied in rats. No adverse effects on reproductive performance was noted or on the development, maturation or reproductive performance of up to two successive generations.
Not a likely route of exposure
Vapors may cause dizziness or asphyxiation without warning. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
Dermal contact may result in defatting, irritation or contact dermatitis. Severe frostbite has been reported as an effect of freon exposure. Injection causes transient pain, erythema and edema.
These substances may cause frostbite to the upper airway and gastrointestinal tract after ingestion. Administer oxygen and manage airway as clinically indicated. Emesis, activated charcoal, and gastric lavage are not recommended.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. If frostbite has occurred, refer to dermal treatment in the main body of this document for rewarming.
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.