Carbon trifluoride
Fluoroform
R 23
Methyl trifluoride
CHF3
Molecular mass: 70.0
(cylinder)
ICSC # 0577
CAS # 75-46-7
RTECS # PB6900000
UN # 1984
|
|
Types of Hazard/ Exposure
|
Acute Hazards/ Symptoms
|
Prevention
|
First Aid/
Fire Fighting
|
|
FIRE
|
Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
|
|
In case of fire in the surroundings: all extinguishing agents allowed.
|
|
Explosion
|
|
|
In case of fire: keep cylinder cool by spraying with water.
|
|
|
|
Exposure
|
|
|
|
|
•Inhalation
|
Confusion.
Drowsiness.
|
Ventilation, local exhaust, or breathing protection.
|
Fresh air, rest.
Artificial respiration if indicated.
Refer for medical attention.
|
|
•Skin
|
ON CONTACT WITH LIQUID: FROSTBITE.
|
Cold-insulating gloves.
|
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes.
Refer for medical attention.
|
|
•Eyes
|
|
Safety goggles.
|
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
|
|
•Ingestion
|
|
|
|
|
Spillage Disposal
|
Storage
|
Packaging & Labelling
|
Ventilation.
NEVER direct water jet on liquid
(extra personal protection: self-contained breathing apparatus).
|
Cool.
Ventilation along the floor.
|
Special insulated cylinder.
UN Hazard Class: 2.2
|
|
|
|
Important Data
|
Physical State; Appearance:
ODOURLESS,
COLOURLESS COMPRESSED LIQUEFIED GAS.
Physical Dangers:
The gas is heavier than air
and may accumulate in low ceiling spaces causing deficiency of oxygen.
Chemical Dangers:
On contact with hot surfaces or flames this substance decomposes forming corrosive and very toxic fumes (hydrogen fluoride,
ICSC # 0283).
Occupational Exposure Limits:
TLV not established.
|
Routes of Exposure:
The substance can be absorbed into the body
by inhalation.
Inhalation Risk:
On loss of containment this gas can cause suffocation by lowering the oxygen content of the air in confined areas.
Effects of Short-Term Exposure:
Inhalation of the vapour may cause depression of the central nervous system.
The liquid may cause frostbite.
Exposure could cause cardiac arrythmia and asphyxiation.
See Notes.
Effects of Long-Term or Repeated Exposure:
|
|
Physical
Properties
|
Boiling point: -84.4°C
Melting point: -155°C
Relative density (water = 1): 1.44
Solubility in water: none
|
Vapour pressure, kPa at 20°C: 4000
Relative vapour density (air = 1): 2.4
Octanol/water partition coefficient as log Pow: 0.64
|
|
Environmental
Data
|
|
|
N O T E S
|
To physicians: adrenergic agents are contraindicated.
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.
Check oxygen content before entering area.
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Freon 23, Frigen 23, Halon 23 are trade names.
Transport Emergency Card: TEC (R)-644
|
|
|
ADDITIONAL INFORMATION
|
|
|
|
ICSC: 0577
|
TRIFLUOROMETHANE
|
|
(C) IPCS, CEC, 1994
|
|
|
IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
|
|
|