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Shanghai Wechem Chemical Co., Ltd.

China Manufacturer with main products: Perfluoropropane, Hydrogen Bromide, Hydrogen Chloride, Hydrogen Sulfide, Hydrogen Selenide, Fluorine, Specialty Gases, Sulfur Hexafluoride

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Oxygen - (O2 )

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  • CAS No.: 7782-44-7


Oxygen - (O2 )
Oxygen is a colorless ,odorless , highly oxidizing gas. Oxygen should not be permitted to contact oil , grease or other combustible materials .
Purity , % 99.995 99.999 99.9997
Argon ≤1.0 ppmv 
Nitrogen ≤25.0  ppmv ≤5.0 ppmv  ≤1.0 ppmv 
Carbon Dioxide ≤0.5 ppmv  ≤0.1 ppmv  ≤0.1 ppmv 
Carbon Monoxide  ≤0.5 ppmv  ≤0.1 ppmv  ≤0.1 ppmv 
THC ( CH4) ≤0.5 ppmv  ≤0.1 ppmv  ≤0.1 ppmv 
Water  ≤2.0 ppmv  ≤0.5 ppmv  ≤0.1 ppmv 
Argon ≤3.0 ppmv  ≤3.0 ppmv 
Hydrogen ≤1.0 ppmv  ≤0.1 ppmv  ≤0.1 ppmv 
DOT Shipping Name  Oxygen Compressed 
DOT Classification 2.2
DOT Label  Non-flammable Gas 
UN Number  UN 1072
CAS No. 7782-44-7
CGA/DISS/JIS/BS341/DIN477 540/714/W22-14R/NO.3/NO.9
Shipped as  Compressed Gas
Technical Information
Cylinder State @ 21.1°C  Gas
Flammable Limits In Air  Non-flammable 
Auto Ignition Temperature (°C ) -
Molecular Weight (g/mol) 31.999
Specific gravity (air =1) 1.105
Critical Temperature ( °C ) -118.57
Critical Pressure ( psig ) 714.4

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