Carbon oxyfluoride
Carbon difluoride oxide
Difluoroformaldehyde
Fluorophosgene
COF2
Molecular mass: 66.0
(cylinder)
ICSC # 0633
CAS # 353-50-4
RTECS # FG6125000
UN # 2417
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings: NO hydrous agents.
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Explosion
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In case of fire: cool cylinder by spraying with water but avoid contact of the substance with water.
Combat fire from a sheltered position.
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Exposure
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STRICT HYGIENE!
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•Inhalation
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Burning sensation.
Sore throat.
Cough.
Laboured breathing.
Shortness of breath.
Symptoms may be delayed (see Notes).
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Half-upright position.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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ON CONTACT WITH LIQUID: FROSTBITE.
Redness.
Pain.
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Cold-insulating gloves.
Protective clothing.
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ON FROSTBITE: rinse with plenty of water, do NOT remove clothes.
Refer for medical attention.
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•Eyes
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ON CONTACT WITH LIQUID:
Redness.
Pain.
Blurred vision.
Severe deep burns.
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Face shield,
or eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Spillage Disposal
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Storage
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Packaging & Labelling
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Evacuate danger area!
Consult an expert!
Ventilation.
NEVER direct water jet on liquid.
Gas-tight chemical protection suit including self-contained breathing apparatus.
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Fireproof if in building.
Cool.
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UN Hazard Class: 2.3
UN Subsidiary Risks: 8
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Important Data
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Physical State; Appearance:
COLOURLESS
HYGROSCOPIC COMPRESSED LIQUEFIED GAS
, WITH PUNGENT ODOUR.
Physical Dangers:
The gas is heavier than air.
Chemical Dangers:
The substance decomposes
on heating at 450-490°C
producing
toxic gases
.
Reacts
with
water
and
moist air
to produce
toxic and corrosive gases
(
hydrogen fluoride
, see ICSC 0283).
Occupational Exposure Limits:
OSHA PEL: none
NIOSH REL: TWA 2 ppm (5 mg/m3) ST 5 ppm (15 mg/m3)
NIOSH IDLH: N.D. See: IDLH INDEX
TLV: 2 ppm as TWA; 5 ppm as STEL; (ACGIH 2003).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of the gas.
Inhalation Risk:
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract
.
Inhalation of high concentrations may cause lung oedema (see Notes).
Rapid evaporation of the liquid may cause frostbite.
The effects may be delayed.
Medical observation is indicated.
See Notes.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: -83°C
Melting point: -114°C
Relative density (water = 1): 1.39 (at -190°C)
Density: 2.89
g/l
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(gas)
Solubility in water:
reaction
Relative vapour density (air = 1): 2.3
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Environmental
Data
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N O T E S
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The compound decomposes in the body to hydrogen fluoride,
see ICSC 0283 Hydrogen fluoride.
Depending on the degree of exposure, periodic medical examination is suggested.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Transport Emergency Card: TEC (R)-20G1TC
NFPA Code: H4; F0; R; 0
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ADDITIONAL INFORMATION
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ICSC: 0633
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CARBONYL FLUORIDE
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(C) IPCS, CEC, 1994
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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.
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