A colorless liquid, H₂NNH₂ (boiling point 114°C or 237°F), with a musty, ammonialike odor. Physically hydrazine is similar to water, but chemically it is reducing, decomposable, basic, and bifunctional. Its derivatives range from simple salts to ring compounds, polymers, and coordination complexes. Major uses of hydrazine include such diverse applications as rocket fuels (since combustion of hydrazine is highly exothermic), corrosion inhibition in boilers, and syntheses of biologically active materials.