Helium is a colorless, odorless, tasteless and non-toxic inert gas. Helium, the second lightest element, is the second most abundant element in the universe despite its scarcity.
Properties of Helium Gas
- Its symbol in the periodic table is expressed as He.
- Atomic number, number of protons and number of electrons are 2.
- Its molecular mass is 4.002602 g/mol.
- Its density relative to air is 0.179 g/cm3.
- It starts to melt at -272.2 degrees.
- It starts to boil at -268.93 degrees.
- It is gaseous at room temperature.
- It is a colorless and odorless gas.
- It is an inert gas and therefore belongs to the group of inert gases.
- It is present at the rate of 0.0005% in the atmosphere.
- Helium gas has non-toxic properties.
- It is a flammable, non-flammable and non-explosive gas.
Usage Areas of Helium Gas
- Balloon filling
- Superconducting, magnetic resonance imaging
- Nuclear power plants as refrigerants
- Metal fabrication, to create a protective atmosphere in the welding process.
- Creating a protective atmosphere, gas chromatographs
- Deep underwater diving, breathing air,
- On analyzers.
Helium is widely used in the welding process mixture with argon gas. This mixture is called ARK gas and can vary according to the helium ratio. It is used for higher heat input than standard welding process. It can be used for welding non-ferrous materials such as copper and aluminum.
Helium is widely used in welding process mix with argon gas. That mixture is called as ARK gas and it can vary according to helium ratio. It is used for higher heat input compared to standard welding process. It can be used for welding of non ferrous material welding like copper, aluminium.
How is it produced?
It is produced by separating it from natural gas in natural gas fields with rich helium content.