Nitrogen Tetroxide

Nitrogen Tetroxide (NTO) is a highly toxic and corrosive oxidizer used in spacecraft propulsion systems. It is a reddish-brown liquid that is stored as a dimer, N2O4. When used as a rocket propellant, NTO is typically mixed with hydrazine to form a hypergolic propellant combination, which ignites spontaneously upon contact. NTO is preferred over other oxidizers due to its high density, stability, and compatibility with various fuels. However, it requires careful handling and storage due to its toxic and corrosive nature. NTO is commonly used in spacecraft propulsion systems, including the maneuvering thrusters of the International Space Station and the Mars Reconnaissance Orbiter.
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