Because dinitrogen tetroxide has intense oxidation character, it was often used as one oxidant of bipropellants.
四氧化二氮由于沸点低、易挥发,直接使用时存在诸多不便,常被制成胶体推进剂使用。
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The crew was delayed from leaving the capsule initially because technicians detected unacceptable levels of dinitrogen tetroxide, one of the two fuels used in Crew Dragon, coming from the service section of the capsule.
Dinitrogen tetroxide, commonly referred to as nitrogen tetroxide, is the chemical compound N2O4. It is a useful reagent in chemical synthesis. It forms an equilibrium mixture with nitrogen dioxide.
Dinitrogen tetroxide is a powerful oxidizer that is hypergolic (spontaneously reacts) upon contact with various forms of hydrazine, which makes the pair a popular bipropellant for rockets.