Helium (He)

Helium is the second lightest element, hydrogen being the lightest. While there is only a little over five cubic feet of helium in a million cubic feet of air, much larger concentrations are found in some natural gas wells, and these are the primary source of commercial helium.

Helium is considered chemically inert. As a gas, it is colorless odorless and tasteless and it less soluble in fluids than any other gas. As a liquid helium is also colorless and odorless. It is extremely important in low temperatures approaching absolute zero. It has the lowest boiling point of any liquefied gas. Other gases will solidify upon contact with liquid helium.

Helium Gas Applications : 

  • Inert gas shield for arc welding 
  • Lifting gas for balloons 
  • Gaseous cooling medium for nuclear reactors
  • A protective atmosphere for titanium and zirconium production 
  • Filling cold weather florescent lamps 
  • Filling neutron counters and gas thermometers

Helium Liquid Applications: 

  • Cooling superconductive magnets and other research conductivity 
  • Cooling masers and other electronic devices 
  • Cryosorption devices used in space simulators 
  • Research on properties of materials at near absolute zero temperature

Helium Grades Carried: 

  • Ultra-High Purity, Zero, High Purity, and Industrial 
DOT Class: 2.2 (Nonflammable Gas)  Specific Volume: 96.7 ft3/lb. at 70 F 
DOT Label: Nonflammable Gas  Specific Gravity ( Air = 1): 0.138 at 70 F 
UN No.: 1046  Molecular Weight:
CAS No.: 7440-59-7 CGA Valve Outlet: 580
TLV-TWA: None Established  Liquid Temperature: -452.1