Monomethylhydrazine (MMH)

Monomethylhydrazine (MMH) is a highly reactive and toxic chemical used as a rocket fuel, primarily in spacecraft propulsion systems. It is a hypergolic substance, meaning it ignites spontaneously upon contact with an oxidizer like nitrogen tetroxide, enabling efficient engine startups in space. MMH is valued for its stability in storage and high energy content, but handling it requires strict safety measures due to its corrosiveness and health risks, including toxicity and carcinogenic potential. Its use is primarily in space missions, where precise and reliable engine performance is essential.