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CARBONYL FLUORIDE ICSC: 0633
Date of Peer Review: November 2003

Carbon oxyfluoride
Carbon difluoride oxide
Difluoroformaldehyde
Fluorophosgene
(cylinder)
CAS # 353-50-4 COF2
RTECS # FG6125000 Molecular mass: 66.0
UN # 2417
EC #
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: NO hydrous agents.
EXPLOSION

In case of fire: cool cylinder by spraying with water but avoid contact of the substance with water. Combat fire from a sheltered position.
EXPOSURE
STRICT HYGIENE!

Inhalation Burning sensation. Sore throat. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin ON CONTACT WITH LIQUID: FROSTBITE. Redness. Pain.
Cold-insulating gloves. Protective clothing.
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.
Eyes ON CONTACT WITH LIQUID: Redness. Pain. Blurred vision. Severe deep burns.
Face shield, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion


SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Ventilation. NEVER direct water jet on liquid. Gas-tight chemical protection suit including self-contained breathing apparatus.
EU Classification
UN Classification
UN Hazard Class: 2.3
UN Subsidiary Risks: 8

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-20G1TC
NFPA Code: H4; F0; R; 0
Fireproof if in building. Cool.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK


CARBONYL FLUORIDE ICSC: 0633
IMPORTANT DATA
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 450-490C producing toxic gases. Reacts with water and moist air to produce toxic and corrosive gases (hydrogen fluoride, see ICSC 0283).

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 2 ppm as TWA; 5 ppm as STEL; (ACGIH 2003).
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.

PHYSICAL PROPERTIES
Boiling point: -83C
Melting point: -114C
Relative density (water = 1): 1.39 (at -190C)
Density: 2.89 g/l (gas)
Solubility in water: reaction
Relative vapour density (air = 1): 2.3
ENVIRONMENTAL DATA

NOTES
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.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999