Acetone, or propanone, is an organic compound with the formula (CH3)2CO. It is the simplest and smallest ketone. It is a colorless, volatile, flammable liquid with a characteristic odor. Acetone 99.9% Liquid Class B is a highly pure and versatile solvent commonly used in various industrial and laboratory applications. It is widely used as a cleaning agent, solvent for paints, coatings, and adhesives, and as a component in the production of plastics, fibers, and pharmaceuticals. Its high purity and low toxicity make it a preferred choice for many applications. Acetone 99.9% Liquid Class B is classified as a Class B flammable liquid, making it suitable for use in environments where flammable materials are present.