ICSC 0633 - CARBONYL FLUORIDE

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CARBONYL FLUORIDE	ICSC: 0633 (November 2003)
Carbon oxyfluoride Carbon difluoride oxide Difluoroformaldehyde Fluorophosgene

CAS #: 353-50-4

UN #: 2417

EC Number: 206-534-2

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water. NO direct contact with water. Combat fire from a sheltered position.

STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Burning sensation. Sore throat. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed. See Notes.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness. Pain. ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves. Protective clothing.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
Eyes	Redness. Pain. ON CONTACT WITH LIQUID: FROSTBITE.	Wear 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 refer for medical attention.
Ingestion

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Ventilation. NEVER direct water jet on liquid. Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 2.3; UN Subsidiary Risks: 8
STORAGE
Fireproof if in building. Cool.
PACKAGING

CARBONYL FLUORIDE

ICSC: 0633

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS HYGROSCOPIC COMPRESSED LIQUEFIED GAS WITH PUNGENT ODOUR. Physical dangers The gas is heavier than air. Chemical dangers Decomposes at 450-490°C. This produces toxic gases. Reacts with water and moist air.	Formula: COF₂ Molecular mass: 66.0 Boiling point: -83°C Melting point: -114°C Relative density (water = 1): 1.39 (-190°C) Density (gas): 2.89 g/l Solubility in water: reaction Relative vapour density (air = 1): 2.3

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS HYGROSCOPIC COMPRESSED LIQUEFIED GAS WITH PUNGENT ODOUR.

Physical dangers
The gas is heavier than air.

Chemical dangers
Decomposes at 450-490°C. This produces toxic gases. Reacts with water and moist air.

Formula: COF₂
Molecular mass: 66.0
Boiling point: -83°C
Melting point: -114°C
Relative density (water = 1): 1.39 (-190°C)
Density (gas): 2.89 g/l
Solubility in water: reaction
Relative vapour density (air = 1): 2.3

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of the gas. Effects of short-term exposure The substance is irritating to the eyes, skin and respiratory tract. Inhalation of high concentrations may cause lung oedema. Rapid evaporation of the liquid may cause frostbite. The effects may be delayed. Medical observation is indicated. See Notes.	Inhalation risk A harmful concentration of this gas in the air will be reached very quickly on loss of containment. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of the gas.

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. Inhalation of high concentrations may cause lung oedema. Rapid evaporation of the liquid may cause frostbite. The effects may be delayed. Medical observation is indicated. See Notes.

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
TLV: 2 ppm as TWA; 5 ppm as STEL

ENVIRONMENT

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 are therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.

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 are therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.

ADDITIONAL INFORMATION

EC Classification

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