/foundation/energy/b/eenews/archive/2016/02/03/air-liquide-launches-a-scientific-contest-on-_1C20_essential-small-molecules_1D20_.aspxEssential Small Molecules such as O2, N2, H2 and CO21 embody Air Liquide’s scientific territory. They have an extremely wide variety of physical and chemical properties which make them essential to life, matter and energy. Reinforcing its focus7.x Production