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HELIUM
(liquefied, cooled)
ICSC: 0603
Peer-Review Status: 05.08.2003 Validated
 
CAS #: 7440-59-7 RTECS #: MH6520000
UN #: 1963
EINECS #: 231-168-5
    Formula: He
Atomic mass: 4.003

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 Dizziness. Lethargy. Headache. Suffocation.  Use 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.  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      

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Ventilation. NEVER direct water jet on liquid. Personal protection: self-contained breathing apparatus.   
EC Classification
 
UN Classification
UN Hazard Class: 2.2 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-20S1963.  Fireproof if in building. Keep in a well-ventilated room. 

IMPORTANT DATA
Physical State; Appearance
ODOURLESS COLOURLESS REFRIGERATED LIQUEFIED GAS. 

Physical dangers
The gas is lighter than air. 

Chemical dangers
 

Occupational exposure limits
TLV (SIMPLE-ASPHYXIANT): (ACGIH 2003). 

Routes of exposure
The substance can be absorbed into the body by inhalation. 

Inhalation risk
On loss of containment this substance can cause suffocation by lowering the oxygen content of the air in confined areas. 

Effects of short-term exposure
The liquid may cause frostbite. Asphyxiation. 

Effects of long-term or repeated exposure
 


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

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
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations
       HELIUM (JECFA Evaluation)