Helium he
Rare gases
Cas no.: 7440-59-7
Einecs no.: 231-168-5
Un no.: un1046
Purity: 99.999%-99.9999%
Dot class: 2.2
Appearance: colorless
Grade standard: electron grade, industrial grade
Cryogenic cooling use:
Helium gas widely used in maglev train and medical nuclear magnetic resonance (nmr) imaging equipment.
Ballon use:
Inflat for ballon for brithday party or celebration or inflat for airship.
Check analyse:
Helium gas widely used in vaccum leak detection such as helium mass spectrometer leak detector.
Shielding gas:
Helium often used as magnesium, zirconium and aluminium, titanium and other metals welding protective gas.