IPCS INCHEM Home
SULFURYL FLUORIDE
(cylinder)
ICSC: 1402
Peer-Review Status: 18.10.2001 Validated
Sulfuryl difluoride
Sulfuric oxyfluoride 
CAS #: 2699-79-8 RTECS #: WT5075000
UN #: 2191
EC #: 009-015-00-7
EINECS #: 220-281-5
    Formula: SO2F2
Molecular mass: 102,0

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, use appropriate extinguishing media. 
EXPLOSION     In case of fire: keep cylinder cool by spraying with water. 
 
EXPOSURE   STRICT HYGIENE!   
Inhalation Cough. Sore throat. Nausea. Vomiting. Tremor.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer 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. 
Eyes Redness.  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   Do not eat, drink, or smoke during work.   

SPILLAGE DISPOSAL
PACKAGING & LABELLING
NEVER direct water jet on liquid. Remove vapour with fine water spray. Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: T, N; R: 23-48/20-50; S: (1/2)-45-63-60-61 
UN Classification
UN Hazard Class: 2.3 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-20G2T.  Fireproof if in building. Keep in a well-ventilated room. Cool. Separated from food and feedstuffs. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS ODOURLESS COMPRESSED OR COMPRESSED LIQUEFIED GAS. 

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

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

Occupational exposure limits
TLV: 5 ppm as TWA; 10 ppm as STEL; (ACGIH 2004). 

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

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 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 this gas may cause lung oedema. See Notes. Exposure could cause death. Rapid evaporation of the liquid may cause frostbite. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: -55.3°C
Melting point: -135.8°C
Density: 3.72 g/l
Solubility in water, ml/100ml: 4-5
Vapour pressure, kPa at 21.1°C: 1.7x10^3
Relative vapour density (air = 1): 3.5  
 

NOTES
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
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.
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.
Card has been partly updated in October 2004.
See sections Occupational Exposure Limits, EU classification, Emergency Response. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


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