Helium He 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: - -
