Hydrogen (H2) is a colorless, odorless, tasteless, flammable and nontoxic gas at atmospheric temperatures and pressures.
Hydrogen has the lowest boiling point of any element except helium. When cooled to its boiling point, -252.76o C (-422.93o F) hydrogen becomes a transparent, odorless liquid that is only one-fourteenth as heavy as water. Hydrogen is available in the gaseous form and is used as fuel, or as in-process feed stock.
Hydrogen is widely used in petroleum refining processes, such as hydro treating, catalytic reforming and hydro cracking. |
