Molecule of the Week

Dinitrogen tetroxide

September 13, 2010

Highly toxic and corrosive dinitrogen tetroxide is in equilibrium with NO2 in its liquid and vapor states. Its brownish color comes from NO2; N2O4 is colorless. It is used commercially as an intermediate in the manufacture of HNO3 and as a nitrating and oxidizing agent. N2O4 is the oxidizer of choice for storable rocket propellants because it is hypergolic with hydrazine fuels.

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