- Freon 143a
Clear, colorless liquid or vapor with a faint ether odor.
Registry Numbers and Inventories.
S 16 33
Mutagen; Reproductive Effector
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
Vapor density (air=1)
0.942 g/cm3 (20 C)
Solubility in water
0.0992 cp (35 C)
2.24 g/s2 (45 C)
Heat of vaporization
Hazards and Protection.
Store in a clean, dry place. Keep cool.
Should not be used for any purpose above atmospheric pressure. Use with sufficient ventilation. Do not mix with air.
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).
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stable at normal temperatures and pressures.
Can react with some metals to form dangerous products Incompatible with strong oxidizing and reducing agents Incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides.
Oxides of carbon, hydrogen fluoride.
Upper exp. limit, %
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Containers may explode when heated. Ruptured cylinders may rocket.
The toxological properties of this substance have not been fully investigated.
Unlikely route of exposure.
Vapors may cause dizziness or asphyxiation without warning. Some may be irritating if inhaled at high concentrations.
Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
May cause irritation.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes. Clothing frozen to the skin should be thawed before being removed. In case of contact with liquefied gas, thaw frosted parts with lukewarm water
Flush with running water for at least 20 minutes.