O2
Molecular mass: 32.0
(cylinder)
ICSC # 0138
CAS # 7782-44-7
RTECS # RS2060000
UN # 1072
EC # 008-001-00-8
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible but enhances combustion of other substances.
Heating will cause rise in pressure with risk of bursting.
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NO open flames, NO sparks, and NO smoking.
NO contact with flammable substances.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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In case of fire: keep cylinder cool by spraying with water.
Combat fire from a sheltered position.
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Exposure
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•Inhalation
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Cough.
Dizziness.
Sore throat.
Visual disturbance.
See Notes.
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Refer for medical attention.
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•Skin
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•Eyes
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Safety goggles.
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•Ingestion
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Spillage Disposal
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Storage
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Packaging & Labelling
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Ventilation.
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Fireproof.
Separated from
combustible and reducing substances.
Cool.
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O symbol
R: 8
S: 2-17
UN Hazard Class: 2.2
UN Subsidiary Risks: 5.1
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Important Data
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Physical State; Appearance:
ODOURLESS
COMPRESSED GAS
Physical Dangers:
The gas is heavier than air.
Chemical Dangers:
The substance is a strong oxidant and reacts with combustible and reducing materials, causing fire and explosion hazard.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation.
Inhalation Risk:
Effects of Short-Term Exposure:
The substance at very high concentrations
is irritating to
the respiratory tract.
The substance may cause effects on the central nervous system,lungs and eyes.
Effects of Long-Term or Repeated Exposure:
Lungs may be affected by inhalation of high concentrations.
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Physical
Properties
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Boiling point: -183°C
Melting point: -218.4°C
Solubility in water, ml/100 ml at 20°C: 3.1
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Relative vapour density (air = 1): 1.1
Octanol/water partition coefficient as log Pow: 0.65
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Environmental
Data
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N O T E S
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Inhalation symptoms are characteristic of exposure to extremely high concentrations only.
See also ICSC0880 Oxygen refrigerated liquid (cryogenic liquid).
Card has been partly updated in October 2005. See sections Physical properties, Emergency Response.
Transport Emergency Card: TEC (R)-20S1072 or 20G1O
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ADDITIONAL INFORMATION
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ICSC: 0138
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OXYGEN
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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