Acetone (CH₃COCH₃) is a colorless, volatile, and flammable liquid with a sweet, fruity odor. It is a widely used solvent in industries, laboratories, and cosmetics (e.g., nail polish remover). Acetone is miscible with water and many organic solvents. It evaporates quickly and is used for cleaning, degreasing, and in chemical synthesis. Prolonged inhalation can be harmful.