Hydrogen is primarily used in the petrochemical industry to obtain lighter derivatives by refining crude oil through desulfurization and hydrocracking processes. It is also consumed as an active ingredient in production processes in large quantities in the chemical industry. Hydrogen is used as a protective and reactive atmosphere component in the production of flat glass and heat treatment of metals, in the cooling of power plant equipment, for the solidification of edible vegetable oils, and in rocket fuel mixtures.
 
What are the Properties of Hydrogen Gas?
Physical properties:
Its molecular weight is 2.016 g/mol.
The boiling point at 1 atmosphere pressure is -252.87 degrees.
The melting point at 1 atmosphere pressure is -259.2 degrees.
Its specific gravity is 0.069.
The critical pressure is 12.83 bar.
Hydrogen gas is colorless and odorless. Although it is not poisonous, it is flammable and combustible.
In environments where oxygen is reduced, hydrogen gas becomes suffocating.
It is found in the atmosphere at a rate of 0.07%.