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OXYGEN (LIQUEFIED)ICSC: 0880 (April 2000)
Oxygen, refrigerated liquid
LOX
Liquid oxygen
CAS #: 7782-44-7
UN #: 1073
EC Number: 231-956-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible but enhances combustion of other substances.  Risk of fire and explosion on contact with combustible substances or reducing agents.  NO open flames, NO sparks and NO smoking. NO contact with flammables. NO contact with reducing agents.    In case of fire in the surroundings, use appropriate extinguishing media.  In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water. Combat fire from a sheltered position. 

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Dizziness. Sore throat. See Notes.    Fresh air, rest. Refer for medical attention. 
Skin 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 See Skin.  Wear safety goggles or face shield.  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 CLASSIFICATION & LABELLING
Ventilation. Remove all ignition sources. Do NOT absorb in saw-dust or other combustible absorbents. NEVER direct water jet on liquid. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 2.2; UN Subsidiary Risks: 5.1 

STORAGE
Fireproof. Separated from combustible substances and reducing agents. Cool. 
PACKAGING
Special insulated container. 
OXYGEN (LIQUEFIED) ICSC: 0880
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
LIQUEFIED GAS. COLOURLESS-TO-BLUE EXTREMELY COLD LIQUID. 

Physical dangers
The gas is heavier than air. 

Chemical dangers
The substance is a strong oxidant. It reacts with combustible and reducing materials. This generates fire and explosion hazard. 

Formula: O2
Molecular mass: 32.0
Boiling point: -183°C
Melting point: -218.4°C
Solubility in water, ml/100ml at 20°C: 3.1
Vapour pressure, kPa at -118°C: 5080
Relative vapour density (air = 1): 1.1
Octanol/water partition coefficient as log Pow: 0.65  


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 at very high concentrations is irritating to the respiratory tract. The substance may cause effects on the central nervous system. 

Inhalation risk
 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
 

NOTES
Work clothes saturated with oxygen may be a serious fire hazard.
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Inhalation symptoms are characteristic of exposure to extremely high concentrations only.
See ICSC 0138. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: O; R: 8; S: (2)-17 

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    See Also:
       Toxicological Abbreviations