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HELIUM ICSC: 0603
Date of Peer Review: May 2003

(liquefied, cooled)
CAS # 7440-59-7 He
RTECS # MH6520000 Atomic mass: 4.003
UN # 1963
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible. Heating will cause rise in pressure with risk of bursting.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION

In case of fire: keep cylinder cool by spraying with water.
EXPOSURE


Inhalation High voice. Dizziness. Dullness. Headache. Suffocation.
Ventilation.
Fresh air, rest. Artificial respiration may be needed. 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 ON CONTACT WITH LIQUID: FROSTBITE.
Safety goggles or face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion


SPILLAGE DISPOSAL PACKAGING & LABELLING
Ventilation. NEVER direct water jet on liquid. (Extra personal protection: self-contained breathing apparatus.)
EU Classification
UN Classification
UN Hazard Class: 2.2

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-20S1963
Fireproof if in building. Keep in a well-ventilated room.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK


HELIUM ICSC: 0603
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS, ODOURLESS, REFRIGERATED, LIQUEFIED GAS.

PHYSICAL DANGERS:
The gas is lighter than air.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: Simple asphyxiant; (ACGIH 2003).
MAK not established.
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.

PHYSICAL PROPERTIES
Boiling point: -268.9C
Melting point: -272.2C
Solubility in water, ml/100 ml at 20C: 0.86
Relative vapour density (air = 1): 0.14
ENVIRONMENTAL DATA

NOTES
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.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999
See Also:
        Helium (CHEMINFO)