Octafluorocyclobutane

  • Perfluorocyclobutane
  • Freon C318
  • Propellant C 318
  • Carbon fluoride
  • FC 318
  • FKWC 318
Formula
C4F8
Structure
Description
Non-flammable, non-toxic gas.
Uses
Refrigerant.

Registry Numbers and Inventories.
CAS
115-25-3
EC (EINECS/ELINCS)
204-075-2
RTECS
GU1779500
RTECS class
Mutagen
UN (DOT)
1976
Merck
12,6841
Beilstein/Gmelin
1909266
Beilstein Reference
4-05-00-00008
Swiss Giftliste 1
G-2012
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C4F8
Formula mass
200.03
Melting point, °C
-38.7
Boiling point, °C
-5.8
Vapor pressure, mmHg
2220 (25 C)
Vapor density (air=1)
7.33
Density
1.500 g/cm3
Solubility in water
Slightly soluble
Surface tension
12.71 g/s2 (-20 C)
Partition coefficient, pKow
0.40
Heat of fusion
2.77 kJ/mol
Heat of vaporization
23.4 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
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.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stability
No data.
Incompatibilities
Can react violently with strong reducing agents such as the very active metals and the active metals.

Fire.
Fire fighting
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.
Fire potential
May burn but does not ignite readily.
Hazards
Containers may explode when heated. Ruptured cylinders may rocket.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
5
Exposure effects
   Ingestion
Unlikely to occur.
   Inhalation
Vapors may cause dizziness or asphyxiation without warning.
   Skin
Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water.
   Eyes
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.

Transport.
UN number
1976
Response guide
Hazard class
2.2
36. Halogenated hydrocarbons
Std. Transport #
4904557