Helium
| Formula / Notation | He |
|---|---|
| CAS Number | 7440-59-7 |
| Molecular Weight | 4.003 |
| Also Known As | He, helium gas, noble helium, alpha particle (nucleus) |
| Category | Elements |
What is Helium?
Helium is the second lightest and second most abundant element in the universe. It is a colourless, odourless, non-toxic, inert noble gas with the lowest boiling point of any element.
Formula & Notation
Other Names / Synonyms: He, helium gas, noble helium, alpha particle (nucleus)
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Helium is the second lightest and second most abundant element in the universe. It is a colourless, odourless, non-toxic, inert noble gas with the lowest boiling point of any element.
Cryogenic cooling for MRI magnets. Pressurising rocket fuel. Inert shielding gas in welding. Lifting gas for balloons. Carrier gas in chromatography.
Non-toxic and non-flammable. Asphyxiant in high concentrations. Pressurised container inhalation risk.
The formula or notation for Helium is: He