ICSC 1402 - SULFURYL FLUORIDE

SULFURYL FLUORIDE	ICSC: 1402 (November 2019)
Sulfuryl difluoride Sulfuric oxyfluoride

CAS #: 2699-79-8

UN #: 2191

EC Number: 220-281-5

	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.

STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Sore throat. Cough. Shortness of breath. Nausea. Vomiting. Weakness. Heart palpitations. Convulsions. Unconsciousness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Refer immediately for medical attention. See Notes.
Skin	ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer immediately for medical attention .
Eyes	Redness. ON CONTACT WITH LIQUID: FROSTBITE.	Wear face shield or eye protection in combination with breathing protection.	ON FROSTBITE: rinse with plenty of water. Refer immediately for medical attention. Keep rinsing during transport for medical attention.
Ingestion		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus. Isolate the area until the gas has dispersed. Shut off cylinder if possible. Remove vapour with fine water spray. Do NOT let this chemical enter the environment.	According to UN GHS Criteria DANGER Contains gas under pressure; may explode if heated Toxic if inhaled May cause respiratory irritation Very toxic to aquatic life Transportation UN Classification UN Hazard Class: 2.3
STORAGE
Fireproof if in building. Cool. Ventilation along the floor.
PACKAGING

SULFURYL FLUORIDE

ICSC: 1402

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS ODOURLESS COMPRESSED OR LIQUEFIED GAS. Physical dangers The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen. See Notes. Chemical dangers Decomposes on heating. This produces toxic fumes including hydrogen fluoride and sulfur oxides.	Formula: SO₂F₂ Molecular mass: 102,0 Boiling point: -55.3°C Melting point: -135.8°C Density: 3.72 g/l Solubility in water, ml/100ml: 4-5 (soluble) Vapour pressure, kPa at 21.1°C: 1700 Relative vapour density (air = 1): 3.5

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS ODOURLESS COMPRESSED OR LIQUEFIED GAS.

Physical dangers
The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen. See Notes.

Chemical dangers
Decomposes on heating. This produces toxic fumes including hydrogen fluoride and sulfur oxides.

Formula: SO₂F₂
Molecular mass: 102,0
Boiling point: -55.3°C
Melting point: -135.8°C
Density: 3.72 g/l
Solubility in water, ml/100ml: 4-5 (soluble)
Vapour pressure, kPa at 21.1°C: 1700
Relative vapour density (air = 1): 3.5

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure Rapid evaporation of the liquid may cause frostbite. The substance is severely irritating to the respiratory tract. The substance may cause effects on the central nervous system. This may result in convulsions and respiratory failure. Inhalation of high concentrations may cause lung oedema. The effects may be delayed. See Notes. Exposure could cause death.	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.

Effects of short-term exposure
Rapid evaporation of the liquid may cause frostbite. The substance is severely irritating to the respiratory tract. The substance may cause effects on the central nervous system. This may result in convulsions and respiratory failure. Inhalation of high concentrations may cause lung oedema. The effects may be delayed. See Notes. Exposure could cause death.

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: 5 ppm as TWA; 10 ppm as STEL

ENVIRONMENT
The substance is very toxic to aquatic organisms.

NOTES
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. High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area. There is no odour warning even when toxic concentrations are present.

NOTES

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.
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.
Check oxygen content before entering area.
There is no odour warning even when toxic concentrations are present.

ADDITIONAL INFORMATION

EC Classification

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    See Also:
       Toxicological Abbreviations
       Sulfuryl fluoride (JMPR Evaluations 2005 Part II Toxicological)