He
(liquefied, cooled)
ICSC # 0603
CAS # 7440-59-7
RTECS # MH6520000
UN # 1963
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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.
Heating will cause rise in pressure with risk of bursting.
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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.
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Exposure
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•Inhalation
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High voice.
Dizziness.
Dullness.
Headache.
Suffocation.
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Ventilation.
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Fresh air, rest.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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ON CONTACT WITH LIQUID: FROSTBITE.
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Cold-insulating gloves.
Protective clothing.
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ON FROSTBITE: rinse with plenty of water, do NOT remove clothes.
Refer for medical attention.
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•Eyes
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ON CONTACT WITH LIQUID: FROSTBITE.
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Safety goggles
or
face shield.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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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.
NEVER direct water jet on liquid.
(Extra personal protection: self-contained breathing apparatus.)
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Fireproof if in building.
Keep in a well-ventilated room.
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UN Hazard Class: 2.2
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Important Data
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Physical State; Appearance:
COLOURLESS
,
ODOURLESS
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REFRIGERATED, LIQUEFIED GAS.
Physical Dangers:
The gas is lighter than air.
Chemical Dangers:
Occupational Exposure Limits:
TLV: Simple asphyxiant; (ACGIH 2003).
MAK not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation.
Inhalation Risk:
On loss of containment this gas can cause suffocation by lowering the oxygen content of the air in confined areas.
Effects of Short-Term Exposure:
The liquid may cause frostbite.
Suffocation.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: -268.9°C
Melting point: -272.2°C
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Solubility in water, ml/100 ml at 20°C: 0.86
Relative vapour density (air = 1): 0.14
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Environmental
Data
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N O T E S
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UN number 1046 is for helium, compressed.
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.
Check oxygen content before entering area.
Transport Emergency Card: TEC (R)-20S1963
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ADDITIONAL INFORMATION
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ICSC: 0603
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HELIUM
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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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