Acetone

Acetonitrile (CH₃CN) is a polar aprotic solvent and the simplest organic nitrile, valued for its high dielectric constant, low viscosity, and complete miscibility with water and most organic solvents. It is extensively used in high-performance liquid chromatography (HPLC), organic synthesis, and as a solvent in battery electrolytes and pharmaceutical production. Toxic and flammable, acetonitrile requires careful handling under well-ventilated conditions, with appropriate protective equipment and fire safety measures.