Monomethylhydrazine

Monomethylhydrazine (MMH) is a chemical compound used as a rocket fuel and as a propellant in spacecraft thrusters. It is a colorless, oily liquid that is highly toxic and volatile. MMH provides the necessary thrust to maneuver satellites and space vehicles by reacting with an oxidizer, such as nitrogen tetroxide. Due to its toxicity and reactivity, handling and storage require strict safety measures. Despite its hazards, MMH remains a reliable source of rocket propulsion in space operations because of its high energy content and performance characteristics.